кликабельно
Measure the trim (you will do front to back).
Cut side seams and sleeves off if you use a tshirt (here I used a tank).
Sew front to back right sides together.
Lay out and pin where you want the armhole to go.
Top stitch new side seam leaving armhole open.
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Supplies: Tshirt, crochet trim (a few yards)
I came up with this idea to make tight shirts wearable again. I had so many cool tshirts yet most of them were purchased when it was trendy to have them snug.
Measure the trim (you will do front to back).
Sew front to back right sides together.
Lay out and pin where you want the armhole to go.
Top stitch new side seam leaving armhole open.
взято отсюда