Get ready to make waves and turn heads with the ultimate warm weather project: knit bikini patterns and bras that’ll have you feeling fierce and fabulous from sand to surf! Skip the department store separates and let’s dive down the rabbit hole of delightful designs for adorable bikini tops, cute bras, and comfy bralettes. 

Now, let’s talk materials. When it comes to crafting the perfect bathing suit and intimates, you want something that’s not just stylish, but also comfy enough to wear all day long. That’s where choosing the right yarn or yarn substitution comes in. From sturdy cotton to stretchy blends that hug your curves just right, our curated designs cover all the best options for ensuring your handmade creations are as comfy as they are cute.

And when I say that these knit bikini patterns and bras are cute, I mean they’re seriously cute! We’re breaking out of the boring standard bikini box and exploring a whole sea of styles. Think flirty designs with intricate lace details, sporty-chic halter strap designs for those who love a good game of beach volleyball, and everything in between. Whether you’re a fan of classic cuts or crave something a little more daring, we’ve got the pattern pieces to suit every mood and vibe.

And speaking of vibes, let’s talk functionality. Because hey, just because it’s handmade doesn’t mean it can’t stand up to some serious fun in the sun! We’ll be checking out some designs with clever hacks to add extra support where you need it most (including those bigger cup sizes) and ensure a secure fit that stays put no matter how many cannonballs you’re doing.

So, are you ready to get your knit on? Grab your knitting needles, pick out your favorite yarn, and let’s get stitching! Scroll down and prepare to be inspired by all of these amazing knit bikini patterns and bras. Let’s make this summer the most stylish one yet!

Molly Smiles Bikini Top

Nothing says fun in the sun like a little bit of flirty ruffles. This halter style bikini top features wide straps for optimal comfort and support. Sweet black and white stripes add a little extra something to the design to take it over the top and would also look great in a solid full color. The best part is that it’s pretty easy to make since it’s all garter stitch. There’s even a matching skirt design with a flouncy hem. 

Designer: DROPS Design
Yarn: Garnstudio DROPS Muskat (DK Weight #3)
Click here for the free knitting pattern!
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BVI Bikini

Small sections of lace and solid stretches of stockinette stitch contrast one another beautifully in this warm and sunny orange bikini design. Something like this string bikini swimsuit pattern is probably what first comes to mind when you think of classic bikini styles. Classics are classics for a reason, so why not give this one a go? 

Designer: Joanne Yordanou Knitwear Designs
Yarn: EL. D. Mouzakis Butterfly Super 10 (DK Weight #3)
Click here for the free knitting pattern!
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Slip Stitch Bra

Double the straps means twice the support for this two-tone bra design but the support doesn’t stop there. The namesake for this design is the clever slip stitch underwire with single crochet edging with a crochet hook that really helps secure the bottom edge of the bra. Whether you’re a B cup or a D cup, this design is sure to deliver in form and function!

Designer: Lisa Shroyer for Interweave
Yarn: Fonty Primavera (Sport Weight #2)
Heirloom Breeze (DK Weight #3)
Click here for the free knitting pattern!
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Twins – Anna

You’ll be feeling ravishing in red with this cute and classic bikini design. This pattern uses garter stitch in the ties for a little extra texture and grip that won’t leave your straps sliding around. The star of the show is the eyelet lace edging around the smooth stockinette stitch cups. This little design element goes a long way to making this bikini look and feel extra cute.

Designer: Rebecca Hatcher for Knitty
Yarn: Rowan Wool Cotton (DK Weight #3)
Click here for the free knitting pattern!
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Zaftig

Knit bikini patterns that are designed for fuller figures are hard to come by, so this is a really lucky find. Shown here on a 36D dress form, this design features full coverage cups and an extra wide band that houses elastic inside for even more support. The ties are made with garter stitch and the cups are made with stockinette stitch.

Designer: Joan McGowan-Michael for Knitty
Yarn: Cascade Yarns ® Fixation Solid (DK Weight #3)
Click here for the free knitting pattern!
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Mermaid Stripes

Blue and white stripes make me think of the sea, so they’re perfect for bikinis. Traditional navy takes a backseat here to a trendy ombre of different shades of blue. The design uses a combination of garter and stockinette stitches with some simple shaping techniques. If you have some yarn leftover when you’re done, why not make those super cute matching shorts?

Designer: DROPS Design
Yarn: Garnstudio DROPS Muskat (DK Weight #3)
Garnstudio DROPS Muskat Soft (DK Weight #3)
Click here for the free knitting pattern!
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Mon Petit Chou

Show off a little bit with this exciting lace bra design. The challenging design is one that you can really sink your needles into and you will feel so proud when you are done. Special techniques include vertical decreases, short rows, slip slip knits, and knit 2 togethers. There is a matching pair of hipster style bottoms if you want to make a full set.

Designer: Kate Gilbert for Knitty
Yarn: Cascade Yarns ® Fixation Solid (DK Weight #3)
Click here for the free knitting pattern!
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Tangerine Top

Dependable cotton yarn and straightforward stitches come together to make this sleeper hit of a bra top. You might think about overlooking this design in favor of something more flashy, but this is the kind of bra you can be cute and cozy in all day long. The generous width of rib stitch along the bottom edge provides lots of support and contrasts nicely with the smooth stockinette stitch used for the rest.

Designer: we are knitters
Yarn: we are knitters The Cotton (Worsted Weight #4)
Click here for the free knitting pattern!
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Bralette: Misty Moonlight

Skip the straps and go for a trendy bandeau style design with this sophisticated lace bralette. When it comes to knit bikini patterns and bras that are this stunning, it almost seems like a shame to hide them underneath your shirt. The pattern calls for knit and purl stitches along with yarn overs, increases, and decreases.

Designer: Brome Fields
Yarn: Cascade Yarns ® Ultra Pima (DK Weight #3)
Click here for the free knitting pattern!
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Stargirl Bralette

A slightly fuzzy yarn gives this casual bra design a soft halo that makes it perfectly suited to lounging around the house in. The design is made to measure and can be made with any weight of yarn. You’ll be using stockinette and 1×1 rib stitches for this design. The straps are made with knitted icord. Subtly embroidered stars give this pattern its name.

Designer: Uma Murphy
Yarn: HipKnitShop Fluff (Bulky Weight #5)
Click here for the free knitting pattern!
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Stash Busting Bralette

Do you have a couple skeins of sock yarn that have been taking up room in your stash? The softness and sturdiness of sock yarn is perfect for intimates, so put that yarn to good use with this classic bralette design. It is worked double stranded so it works up quicker than you might think and the design keeps it easy with basic 2×2 rib and stockinette stitches.

Designer: Hiris Makes
Yarn: Hobbii Unicorn Solid (Fingering Weight #1)
Click here for the free knitting pattern!
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Trinity Bellwoods Bralette

Knit ribbing provides plenty of supportive stretch in this totally textured bralette design but it’s not just basic and boring rib stitch. The lower band is made in twisted rib stitch band while the body of the bra is knit in brioche stitch to keep things interesting. Finish it off with some sturdy icord straps and this just might be your new go-to bra pattern.

Designer: Katherine Poole-Fournier for Yarnspirations
Yarn: Patons North America Grace (Sport Weight #2)
Click here for the free knitting pattern!
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Mermaid Bra

Here’s a little something different for all the fantasy lovers out there. If you need a mermaid costume in a hurry, here’s a neat idea for you. Stockinette stitch shell shapes are sewn onto a store bought bra and decorated with lots of beads for some extra sparkle. Of course, you don’t need any special reason to want to wear a cute mermaid bra.

Designer: Knitting is Awesome
Yarn: Patons North America Lace Sequin (Sport Weight #2)
Loops & Threads Payette (Sport Weight #2)
Click here for the free knitting pattern!
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Girly Knits Bra Top

A self-striping yarn adds a little extra razzle dazzle to this bra top design. It is knit using rib and stockinette stitches and working in the round. The way that it is worked makes it easy to add or remove length to get your perfect amount of coverage and you will see that the creator made a few different lengths during the design process. It is finished off with simple icord straps.

Designer: Knitting is Awesome
Yarn: Knit Picks Chroma Worsted (Worsted Weight #4)
Click here for the free knitting pattern!
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Bandeau Bralette

The next one of our knit bikini patterns and bras is bound to turn some heads. It is a really unique design that can be worn in a number of different ways and it is plenty stylish enough to be worn on its own without putting a shirt on over it. The pattern calls for knit, purl, and slip stitches along with yarn overs, knit 2 togethers, and stitches passed over.

Designer: Di Gilpin
Yarn: Watercolours and Lace Bluefaced Leicester 4ply (Fingering Weight #1)
Click here for the free knitting pattern!
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Multicolor Bikini

This video guide takes you step-by-step through the process of creating your very own stylish and customized bikini. With basic stockinette stitch and helpful visuals, even beginners can tackle this project with confidence, so you can say goodbye to store-bought swimsuits and hello to a handmade creation that’s as unique as you are!

Designer: Mena Knits
Yarn: Cleckheaton California 8ply (DK Weight #3)
Click here for the free knitting pattern!
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Brioche Bralette

The brioche technique adds a little extra refinement and sophistication to this cute tie back bralette. I like the wide straps and the generous width of the band underneath the cups that provides extra support. Follow along with the video tutorial to learn how to make one of these adorable bralettes for yourself. I want one in every color!

Designer: Handmade by Aura
Yarn: DROPS Safran (Sport Weight #2)
Click here for the free knitting pattern!
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Walk the Line Top

Big chested gals will love this stylish and supportive bra top design. The pattern is very straightforward and easy enough for beginner knitters. It is worked flat in back and forth rows using stockinette stitch. The back of the top is laced up corset style with icord straps to make it easier to get on and take off without stretching it out.

Designer: ShanaKay Salmon for Hobbii
Yarn: Hobbii Friends Cotton 8/8 (Worsted Weight #4)
Click here for the free knitting pattern!
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Streaked Top Tricot

This design may be worked double stranded but it keeps things lightweight by working with cotton thread. I love the playful stripes and eyelet lace accents. The pattern calls for knit and purl stitches along with knit 2 togethers and yarn overs. It is available for free in both video and written format so you can follow along with ease.

Designer: Bemoon Designs
Yarn: Light Fingering Weight #0
Click here for the free knitting pattern!
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Prairie Rose Singlet

Our curated selection of knit bikini patterns and bras come in all shapes and sizes but this design has one of the best coverages. If you like to dress on the modest side, this cleavage free design should be right up your alley. It is easy to make using 1×1 and 2×2 rib along with garter stitch edging and it is super comfortable as well.

Designer: DROPS Design
Yarn: Garnstudio DROPS Big Merino (Aran Weight #4)
Click here for the free knitting pattern!
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Effortless Summer Crop Top

Beginner knitters will love this easy and fast to knit bulky weight yarn bra top. The pattern calls for just knit, purl, and slip stitches. There’s no shaping so don’t sweat it if you haven’t quite mastered knitting increases and decreases. The straps are knit separately and then sewn on, so you won’t need to do any tricky short rows or picking up stitches.

Designer: handmade state of mind
Yarn: Yarn and Colors Super Must-Have (Bulky Weight #5)
Click here for the free knitting pattern!
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Textured Knit Bikini

Let’s turn up the texture with this triangle bikini design. Even the edges of this design are textured so you’re sure not to get bored as you work on this project. The cups are worked from the top down so you can stop increasing when you are satisfied with the size. This pattern is available as a free video tutorial so you can follow along step by step.

Designer: Knitting Molla
Yarn: None specified
Click here for the free knitting pattern!
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Chunky Knit Bra Top

Super bulky weight yarn makes short work of this halter style bra top. It also makes this top extra cozy and squishy so you can comfortably wear it all day. The pattern is worked in rows using basic stockinette and rib stitches so it’s very beginner friendly. It could just become your new favorite go-to pattern for intimates.

Designer: Imogen Abbott
Yarn: Super Bulky Weight #6
Click here for the free knitting pattern!
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Chunky Bralette Top

Here’s another one of our knit bikini patterns and bras that calls for a super bulky weight yarn. These kinds of designs are great for those days when you’re short on patience and you just want to make some decent progress with your knitting projects. It’s quick, it’s cute, and it’s super easy to make using basic stockinette stitch, so you might find yourself casting on a second one after you finish your first.

Designer: Kara’s Knit-Eng
Yarn: Malabrigo Rasta (Super Bulky Weight #6)
Click here for the free knitting pattern!
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The Iris Bra Top

Full coverage cups and a wide band underneath provide exceptional support in this bra top, even for the large chested ladies. It is worked entirely in 1×1 rib stitch for a little extra stretch and texture. I especially like the unique look that the bra cups receive from the regular decreases. The vertical line that forms blends in seamlessly with the thin spaghetti straps.

Designer: Bloom Design Patterns
Yarn: DROPS Safran (Sport Weight #2)
Click here for the free knitting pattern!
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Final Thoughts on Knit Bikini Patterns and Bras

Knitting your own bikinis and bras opens up a world of creativity and customization, allowing you to express your unique style while staying comfy and chic all summer long and beyond. I hope that these knit bikini patterns and bras inspired you to try your hand at making one (or a few!) for yourself.

Don’t forget, sharing is caring! Send this free knitting pattern round-up to all your knitting friends so they can join in on the fun too! Bookmark this page or save the link to your Pinterest board for amazing knitting patterns. 

I’ll see you next week for another free knitting pattern round-up. Make sure to follow the blog so you never miss a post. <3

Happy Knitting!