Introduction
Say hello to Jade Sewing Pattern — a chic crop top you can sew in two ways. Go single layer for a light everyday piece or a flirty underwear-style top in transparent lace. Or choose the double-layer front for extra support that’s fab for gym sessions or as the top of a two-piece swim set. Beginners are totally welcome; I’m sharing the exact steps I use so your “Jade” looks polished from the first stitch.
Materials & Tools You’ll Need
Elastic — the soul of stretch
For clean edges at the neckline, armholes and hem, fold-over elastic is the easiest to handle and very forgiving. If you want a romantic lingerie finish, pick picot elastic — choose tiny scallops for subtle or larger scallops for a luxe vibe. For serious under-bust support, add a wide band elastic at the hem; a 5 cm band adds 5 cm to the finished length and feels snug for workouts.
Threads & Needles — the real power couple
Use polyester thread only — cotton snaps on stretch fabrics. I often sew with strong branded threads, but any good polyester matched to your fabric works. For needles, start with 75/11 needles (stretch or ballpoint) so stitches glide through your four-way knits and elastics without skipped stitches.
Cutting & Marking Tools
Outline with chalk and to secure layers when sewing use pins (or clips). Sharp tools matter: keep sharp scissors close for curves and corners. Prefer quick cutting? Place fabric on a healing mat and trace the pattern with a rotary cutter for crisp, accurate edges.
Fabrics & Combinations (what works beautifully)
Use any stretch knit you love. For underwear styling, four-way stretch mesh is airy with light support; guipure or stretch lace (an open scallop edge looks dreamy) is gorgeous for going-out looks. For activewear or swim, choose polyester, lycra or jersey (I lean toward lycra/poly). You can also mix a supportive lycra/poly front with a mesh back for a cooler feel; prints like florals or leopard look fantastic.
For a friendly gear refresher, peek at “Top 10 Sewing Supplies for Making Women’s Underwear (And Why You’ll Fall in Love With Them)”.
Assembly Tips
Print on A4 at 100% and check the 5 × 5 cm test square. Jade comes one size per page (no spaghetti of nested lines). Measure your chest at the fullest point and choose the closest size — stretch will forgive a couple of centimetres.
SIZES YOU WILL GET:
UK4 / XXS (Chest 82cm)
UK6 / XS (Chest 86cm)
UK8 / S (Chest 90cm)
UK10 / M (Chest 94cm)
UK12 / L (Chest 98cm)
UK14 / XL (Chest 102cm)
UK16 / XXL (Chest 106cm)
UK18 / 3XL (Chest 110cm)
UK20 / 4XL (Chest 114cm)
I once had the pages get mixed in the printer and it turned into a Lego-style puzzle. The main piece was fine because the size was printed on it, but the smaller connectors were tricky — a few millimetres off can affect the final look. That’s why every Jade element repeats the size label (e.g., Size S on the main front and also on the continuing strap under the BusinkaMania name). It saves guessing and speeds up assembly.
Now tape using triangle markers: match 1A to 1A, (front) and 1B to 1B, (back) until you’ve built complete front and back pieces. Seam allowance is included, and Fold marks show where to place pieces on the fold.
Preparation Tips
If your printer isn’t already dialled in, print the first page only to confirm the test square, then do the rest. Assemble the full front and back before cutting fabric so alignment stays true. Place edges marked Fold exactly on the fabric fold for perfect symmetry. Because seam allowance is already included, cut the outer line and relax — no mid-project maths.
How to Sew Crop-Top “Jade”
Method 1 — Double-Layer Front (support for gym & swim)
Fold fabric, place the front on the fold, and cut two fronts plus one back. Lay front layer 1 right-side up, place the back on top right-sides together, then lay front layer 2 right-side down. You’ve made a tidy sandwich: back in the middle, the two fronts facing each other.
Close the shoulder and side seams
Sew both shoulders and both side seams through all layers. An overlocker is optional here — every seam hides inside the sandwich. On a regular machine, use a narrow zigzag (or reinforce a straight stitch by sewing back and forth). Myth buster: you don’t need an overlocker for this tidy finish.
Turn right-side out and finish the edges
Turn Jade to the right side. Finish the neckline, armholes and hem with fold-over elastic. Prefer stronger support? Swap the hem for a wide band elastic (remember it adds to the length). Because the seams are enclosed, the inside looks as neat as the outside.
Method 2 — Single Layer (light, everyday, or lingerie-style)
Cut one front (on the fold) and one back. Place front right-side up, back right-side down. Pin one shoulder seam and the opposite side seam (e.g., right shoulder + left side) and sew those two seams — an overlocker is ideal since these seams remain visible; a narrow zigzag on a sewing machine also works.
Press seam allowances to the back — always
Push the sewn seam allowances toward the back piece and pin so they don’t flip while stitching. Small habit, big payoff — it keeps the interior neat and consistent.
Attach elastic with the openings flat
Since we’ve kept one shoulder and one side seam open. Start your elastic at an open side seam and sew around the first armhole, going up over the shoulder and back down. Stitch the neckline from one shoulder to the other, then the second armhole, and finish with the hem. Use fold-over elastic or picot elastic — just keep those stitched seams pressed toward the back as you go.
Close the remaining seams and lock them neatly
Flip right sides together, align elastic joins, and sew the last shoulder and last side seams. For a perfect join, hand-tack the elastic ends together first, then machine-stitch so nothing slides under the foot. Finish by hand-anchoring the allowances to the back (a tiny blanket stitch works a treat) so they stay pointing the right way.
Fitting & Adjustments
Choose your build to suit your day: double-layer front for more support (gym/swim) or single layer for lighter wear or lingerie styling. A wide band elastic at the hem boosts support and adds length — decide that before cutting. If you run warm, pair a lycra/poly front with a mesh back for breezier workouts. Lace or guipure gives Jade a romantic “night-out” look without changing the steps.
Finishing Touches
Give the elastic a gentle steam and flat press (no stretching while pressing). Trim thread tails and check that shoulder and side elastic joins are level. Whether you used glossy polyester, sleek lycra, airy mesh, or statement guipure, your Jade is ready for brunch, the gym, or poolside.
Final Thoughts
Jade stitched and done — beautifully. If you want matching bottoms for a set or swim look, browse our underwear sewing patterns. And if you prefer to watch while you sew (including the exact machine settings for elastic), follow along with the YouTube tutorial for stress-free stitching.
