Free Crochet Swimwear Set Pattern – Bikini Top & Bottom Set For Summer

The skirt is the more advanced piece of the two, worked in an open lattice pattern that needs a steady chain count to keep the diamonds lined up, while the top itself stays simple enough for beginners. If a full skirt is more coverage than you want, the tie-side bikini bottom pairs with this same top for a lower-profile two-piece instead.

Materials

• Yarn suitable for swimwear or lightweight garments
• Crochet hook that matches your yarn
• Stitch markers
• Scissors
• Yarn needle

Working Stitches Explained

• Crochet V-Stitch

Bikini Top

Make 2 Cups

Foundation and First Row

• Measure from the side of your breast to just past the nipple and chain to that length
• Chain 2 more for height and skip those chains
• Double crochet into each chain across
• In the last stitch work 3 double crochets and place a stitch marker in the middle stitch
• Work 2 more double crochets into the same stitch
• Double crochet back down the opposite side of the foundation chain

Building the Cup Back Loop Only

• Chain 2 and turn
• Work back loop only double crochets in each stitch until reaching the stitch marker
• Remove the marker and work 2 double crochets into the marked stitch
• Place the marker in the second stitch made
• Work 1 more double crochet into the same stitch
• Continue back loop only double crochets to the end of the row
• Repeat these rows until the cup reaches your desired coverage

1. If you’re a beginner and crochet patterns feel confusing, start with the video tutorial below, it’s the easiest way to learn as you go!

Edging and Neck Straps

• Work a row of double crochets evenly along the raw bottom edge of the cup
• Attach yarn at the top point of the cup
• Work 4 double crochets across the top
• Alternate one row of 4 double crochets with one row of space stitches made by chaining 2 turning skipping one stitch and double crocheting into the last stitch
• Repeat until the strap reaches the top of your shoulder

Connecting the Cups

• Place both cups side by side
• Single crochet across the bottom edges to join them
• Skip several stitches at the center and chain across to create a keyhole opening

Bikini Bottoms

Front Panel

• Chain a length that matches the width of the front of bikini bottoms you already own
• Work rows of double crochet while decreasing at the beginning and end of each row
• Continue decreasing until reaching the narrowest part of the crotch
• Work straight rows without decreases for the desired length

Back Panel

• Start with a wider foundation chain than the front
• Work double crochet rows while decreasing on both sides
• Continue until the width matches the front crotch section

Assembly

• Single crochet the front and back panels together at the crotch
• Create braided drawstrings using six strands of yarn
• Thread the drawstrings through the top edges of the front and back panels to tie at the hips

Finishing

• Use the same braiding method to add long ties to the neck straps and side edges of the top
• Weave in all loose ends securely

Fit and Sizing Guidance

• This set is designed to be adjusted as you crochet rather than sized by stitch counts.
• For the top, the initial chain determines cup width, while the number of increase rows controls coverage and depth.
• Stop increasing when the cup comfortably covers without pulling.
• For the bottoms, using an existing pair as a reference helps ensure the front and back panels match your preferred rise and width.
• Check fit frequently before assembly, especially at the crotch and hip areas.

Stitch and Shaping Clarity

• The cup shaping comes from the grouped increases worked into the marked center stitch.
• Placing the marker in the middle of the increase helps you consistently locate the center point on every row, which keeps both cups symmetrical.
• Working the cup rows in back loop only adds subtle flexibility and definition, helping the fabric curve smoothly instead of lying flat.

Beginner Notes

• If you are new to garment crochet, take your time measuring before starting each section.
• Stitch markers are essential here, especially for tracking the center of the cups and keeping increases aligned.
• Practice the space stitch used in the straps on a small swatch first if it feels unfamiliar.

Troubleshooting

• If a cup begins to flare outward, reduce the number of increase rows or stop increasing sooner.
• If the cup feels too shallow, continue repeating the increase rows for additional depth.
• If the bottoms twist during assembly, lay both panels flat and pin them before single crocheting the crotch seam.

Finishing Notes

• Because swimwear experiences more movement and moisture, secure all ends carefully and avoid loose joins.
• Even tension throughout the straps and ties will help the finished set sit comfortably and maintain its shape when worn.