Free Crochet Crop Top Blue Pattern With Adjustable Cups

This Crochet Blue Crop Top pattern is a clean, modern make that stays beginner-friendly while still looking detailed and high-end. The fit comes from simple triangular cups that you grow to your own measurements, then connect with custom side chains so the top sits comfortably across the underbust.

Crochet Blue Crop Top

What makes this design special is the bold decorative border: a textured popcorn round, a spiked single crochet round for depth, and an X stitch section that creates a lacy, structured finish. You can easily adjust the cup width, side coverage, strap length, and tie style, and you can keep it one color or switch colors at each border round for a trendy contrast look.

Notes

• This pattern is written to be easily resized by measuring as you go
• The cups are worked around a foundation chain to form a triangle shape
• The top point increases are made by working 3 single crochets into the same stitch each row
• Border rounds are worked across the bottom edge of the joined cups
• Use stitch markers to keep the cup peak centered and consistent

Abbreviations

• ch = chain
• sc = single crochet
• dc = double crochet
• sl st = slip stitch
• st = stitch

Materials

• Worsted weight yarn
• 5.0 mm crochet hook
• Scissors
• Yarn needle
• Stitch markers
• Measuring tape

Sizing and Fit Guide

• Cup height is the distance from underbust to nipple
• Cup width is the desired coverage from inner cup edge to outer cup edge
• Side chains create underbust length from outer cup edge toward the back
• Straps are adjusted to your preferred shoulder length and back tie style

Cup Construction Make 2

Cup Foundation

• Make a slip knot
• Chain a length that matches your cup height from underbust to nipple
• Use the example chain count as a starting point if needed

Round 1 Creating the First Cup Shape

• Sc in the 2nd ch from the hook
• Sc in each ch across to the last chain
• Ch 1 and rotate the work so you can crochet along the opposite side of the foundation chain
• Sc evenly back up along the opposite side of the chain
• In the very top chain space at the point, work 3 sc into the same stitch
• Place a stitch marker in the middle sc of the 3 sc you just made
• Sc down the remaining side until you reach the bottom corner

Round 2 and Onward Expanding the Cup

• Ch 1 and turn
• Sc up the side of the cup evenly
• When you reach the stitch marker at the top point, work 3 sc into that marked stitch
• Move the stitch marker into the middle sc of the 3 sc you just created
• Sc down the other side evenly to the bottom corner
• Repeat these expansion rounds until the cup width matches your preferred coverage

Cup Sizing Checkpoints

• Measure cup width across the widest part after each few rounds
• Stop increasing when the cup covers from inner edge to outer edge the way you want
• If you want more coverage, keep repeating the increase rounds
• If you want a smaller triangle, stop earlier and make the second cup identical

Joining and Side Coverage

Side Chains for Cup 1

• Attach yarn at the bottom outer corner of the first cup if not already attached
• Chain the desired length for side coverage along the underbust
• Fasten off and leave a tail for weaving

Side Chains for Cup 2

• On the second cup, attach yarn at the bottom outer corner
• Chain the same number of chains used on cup 1
• Do not fasten off

Joining the Cups Across the Bottom

• Sc in the 2nd ch from the hook and sc across the side chains back toward the cup
• Continue with sc evenly across the bottom edge of cup 2 toward the inner corner
• To join to cup 1, insert hook into the bottom inner corner of cup 1
• Pull yarn through and make a joining sc
• Continue working sc evenly across the bottom edge of cup 1
• Sc across the side chain section of cup 1 until you reach the end
• Ch 1 and turn to begin building a clean base row if you want more stability

Optional Base Rows for More Support

• Work 1 to 3 rows of sc across the entire underbust edge
• Keep stitches even and do not increase
• This creates a firmer band before the decorative border

Decorative Border Section

Border Setup Notes

• Work borders along the bottom edge only unless you want to edge the whole top
• Change colors between rounds if you want a bold multi-color look
• Keep tension consistent so the border lies flat

Border Round 1 Popcorn Stitch Round

• Attach yarn at one end of the bottom edge
• Ch 3 to start the round
• Work dc across until you reach the first stitch where you want a popcorn
• Work a popcorn stitch in the chosen stitch
• For each popcorn stitch, make 5 dc into the same stitch
• Pull the working loop up slightly
• Insert hook into the top of the first dc of the group
• Place the loop back on the hook and pull it through to close the popcorn
• Work 3 dc between popcorn stitches across the row
• Continue repeating popcorn then 3 dc spacing until the end
• End the round with dc stitches as needed so the spacing looks balanced
• Fasten off if changing colors

For Border Round 2 Spiked Single Crochet Round

• Attach yarn at the start of the border
• Ch 1
• Work spiked sc across by inserting the hook into the row below instead of the current row
• Pull up a loop, yarn over, and complete the sc normally
• Keep spike placement consistent so the texture looks even
• Work spiked sc across the entire border
• Fasten off if changing colors

Border Round 3 X Stitch Round

• Attach yarn at the start of the border
• Ch 2
• Skip 2 stitches and dc in the 3rd stitch
• Ch 2
• Dc back into the first skipped stitch to form an X
• Repeat across by skipping forward, dc, ch 2, and dc back into the skipped stitch
• Keep the X stitches evenly spaced so the border stays flat
• At the end, work a dc in the last stitch if needed to finish neatly
• Fasten off if changing colors

Border Round 4 Smoothing Single Crochet Round

• Attach yarn and ch 1
• Work sc evenly across the border
• In each X stitch space, work multiple sc to fill it smoothly
• Use about 4 sc into each X space as a guide
• Adjust slightly if needed so the edge lies flat
• Fasten off and weave in the end

Side Loops for Back Ties

Loop Panel Setup

• Attach yarn at one side edge of the underbust band
• Ch 1 and turn

Loop Rows

• Sc across a short section at the side edge to create a small panel
• In the next row, create a loop space by chaining 2 and skipping 2 stitches
• Continue sc stitches before and after the chain gap to hold the shape
• Repeat for a few rows so the loop is stable and reinforced
• Fasten off
• Repeat the same loop panel on the other side

Back Ties

• Attach yarn to one side loop area
• Chain to your desired tie length
• Slip stitch back down the chain or single crochet back for a thicker tie
• Fasten off
• Repeat for the other side

Shoulder Straps

Strap Attachment

• Attach yarn at the top point of the first cup

Strap Construction

• Use a double strand method by holding two strands together if desired
• Create a strong strap by chaining to your preferred length
• For a thicker strap, work single crochet back down the chain
• For a cord style strap, use the wrapped cord technique by wrapping yarn over the hook before pulling through
• Attach the strap to the back band or leave it to tie depending on your style

Repeat for Second Strap

• Attach yarn at the top point of the second cup
• Make the same strap length and style

Strap End Detail

• At the end of each strap, add a small circle or flower detail
• Chain a small ring space or use an existing chain space at the strap tip
• Work 4 dc into that space
• Sl st to close if you want it more defined
• Fasten off

Finishing

• Weave in all ends securely
• Try on the top and adjust tie length if needed
• Block lightly if the border curls
• If you want more support, add an extra sc band row at the underbust or use thicker straps