Free Crochet Granny Square Bikini Top Pattern For Summer

Dive into summer with this beautifully detailed crochet bikini top pattern built entirely from classic granny squares. This project combines the timeless charm of granny square motifs with a trendy, wearable design that’s perfect for beach days, poolside lounging, or festival fashion.

Crochet Bikini Top

You'll learn how to create textured squares, shape them into a flattering bikini form, and finish off with customizable straps and edging. Whether you're crafting your first swimwear piece or looking for a fun summer project, this pattern offers both structure and creativity in one. It's beginner-friendly yet stylish enough to make a statement.

Materials

Yarn of your choice (cotton recommended for swimwear)
Crochet hook suited to your yarn size
Scissors
Tapestry needle
Stitch markers (optional)

Creating the Granny Square

Start with a loop and crochet 16 double crochets into the loop
Pull the yarn tail to close the loop
Work six-loop stitches around the first row, repeating 16 times

Pull all loops and close them together

In each space, work one and a half stitches (3 stitches per hole), repeating 16 times
After every group, chain 2 and move to the next hole
Begin forming the square shape with 6 double crochets for each side
In the same corner hole, crochet 3 double crochets, 2 chains, and another 3 double crochets
Between corners, work 3 half crochets in each of the next three holes
Continue the pattern for all four sides
Work one and a half crochets in each hole around the square
In corners, do 2 one and a half crochets, 2 chains, then another 2 one and a half crochets in the same hole
Continue with single one and a half crochets in all other spaces
Crochet a double crochet, chain 1, double crochet, chain 1 around the square
In corners, work 2 double crochets, 2 chains, then another 2 double crochets in the same hole

Skip one hole between each double crochet on the sides

Double crochet all around the square
In each corner, place 2 double crochets, 2 chains, then another 2 double crochets in the same hole
Finish with two rows of single crochet around
In the corners, always put 4 single crochets to maintain the square shape

Assembling the Bikini Top

Make two granny squares and three crochet triangles (triangles are not shown in this video)
Arrange with a granny square on each side and three triangles in the middle
Use a needle and stitch markers to align pieces
Begin sewing from the bottom upward, connecting all sections neatly

Finishing the Bikini Top (Lower Section)

Work 2 rows of single crochet from one side to the other
Turn and chain 3
Crochet double crochets, skipping one hole, then chaining one between each double
Work single crochets across the top of chain spaces from the previous row
Double crochet from one side to the other
Alternate front and back double crochet stitches across
Single crochet across the row on top of previous stitches