This bottom leans into an earthy, sand-toned palette worked in simple single crochet rows from waistband down to the leg opening no fancy stitch changes, just steady shaping that’s easy to follow if it’s your first bikini bottom. The tan shown here pairs naturally with warm neutrals if you’re building out a few pieces at once. For another straightforward bottom with a different finish, the bikini bottom with elastic waist and leg edging swaps the tie sides for a stretch fit instead.
Crochet Swimwear Boho Bikini Bottom
Because this pattern is written for the bottom piece specifically, it’s an easy one to pair with whatever top you already have on hand, crochet or otherwise. If you’d rather work a matching top from scratch, the bikini set with pink triangle top and adjustable bottom gives you both pieces from one source instead of mixing patterns.
Materials
- Yarn (two rolls; same or coordinating colors)
- Crochet hook suitable for your yarn
- Smaller crochet hook for elastic edges
- Elastic
- Paperclip (used as a removable stitch marker)
- Yarn needle
Your Stitch Roadmap
Front Panel
The front panel is worked flat in rows, beginning with a narrow foundation and gradually increasing to shape the body. A paperclip is used early on to help identify the correct stitch placement and keep the edges consistent.
- Chain 10 stitches to begin the foundation
- Place a paperclip in the ninth chain to mark the starting point
- Chain 3 and work one double crochet into the marked chain
From this point onward, the chain-3 counts as height only and does not count as a stitch unless otherwise stated.
- Work double crochet stitches across the row
- Turn your work, chain 3, and double crochet into each stitch for the next three rows, keeping ten double crochets per row
These straight rows create a stable base before shaping begins.
Increasing for Shape
The next section adds width gradually to contour the body.
- Chain 3, turn
- Work two double crochets into the first stitch
- Double crochet across
- Work two double crochets into the last stitch
- Don’t let crochet patterns intimidate you! If you’re a beginner, the video tutorial below makes it super easy to follow along!
This increase row adds one stitch on each side.
- Repeat the increase row for eight more rows, adding one double crochet at the beginning and end of each row
If adjusting size, this is the main section where extra rows can be added or removed.
Wing Extensions
The wing extensions create side coverage and help connect the front and back panels smoothly.
- Chain 4, turn
- Work single crochet into the third chain from the hook and the next chain
- Continue the row in double crochet to form the wing extension
To mirror the shaping:
- Attach a second yarn strand to the opposite side
- Chain 4, fasten off
- Double crochet across those chains and finish the last two stitches with single crochet
- Repeat the wing extension row once more, or add extra rows for larger sizes
Keeping the single crochets at the edge helps stabilize the wings and reduces curling.
Back Panel
The back panel is worked directly from the foundation edge of the front panel and mirrors the shaping logic used earlier.
- Flip the front panel
- Attach yarn to the bottom of the foundation chain
Shaping is created through consistent increases:
- Work rows with two double crochets in the first and last stitch of every row
- Continue increasing for the number of rows needed for your size
As with the front, size adjustments are made by adding or removing rows, not by changing stitch types.
Back Wing Extensions
- Add wing extensions using the same chain and single crochet method used on the front panel
This keeps both sides visually and structurally balanced.
Connecting the Sides
The side connections form the hip width and determine how snug or relaxed the fit will be.
- From the back panel, chain the required number of stitches for your size
- Slip stitch to the front panel
Repeat on the opposite side:
- Attach yarn to the opposite side of the front panel
- Chain the same number of stitches
- Connect to the back panel
To stabilize the opening:
- Crochet two full rounds of double crochet around the entire waist opening
These rounds even out tension and prepare the edge for elastic.
Adding Elastic
Elastic is crocheted directly into the fabric for a secure, long-lasting fit.
- Measure around your hips where you want the bikini bottoms to sit
- Subtract ten inches from this measurement and cut the elastic
- Tie the elastic ends securely
When working elastic:
- Hold the elastic behind your stitches
- Work two single crochets into each double crochet around the waist
- Gently stretch the elastic as you crochet so it gathers evenly
This method locks the elastic into the stitches instead of sewing it in later.
Leg Openings
- Repeat the same single crochet method around each leg opening
- Leave the leg elastic open while crocheting
- Tie it off at the end after checking the fit
This allows final adjustments before committing to the elastic length.
Finishing
- Use a yarn needle to weave in all loose ends neatly through the waistband stitches
Secure weaving here helps reinforce areas under tension and keeps the finish clean and comfortable against the skin.
