Things You'll Need:
- Pins
- Needle and thread
- Scissors
- Sewing machine (optional)
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Step 1
Try on the dress with the appropriate bra and shoes. Determine any fitting issues. Is the length right? Does the bust fit? Strapless dresses should fit close from bust to waist, while a dress with straps is designed for a looser fit.
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Step 2
Pin your prom dress to correct the fit. Ideally, the dress should be inside out when you pin it. To alter the bust, pin at the bust darts, rather than the side seams. Even out substantial alterations between seams, when possible.
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Step 3
Baste alterations into place. Use a needle and matching thread, or a sewing machine set to a long stitch length. For best results, sew hems by hand. If you remove fabric, stitch over the cut edges with a serger or zig zag stitch to prevent the fabric from fraying.
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Step 4
Try on your prom dress and assess the alterations. Make any necessary adjustments.












