Neckline too Low? No-Sew DIY Fix

How to Adjust the Neckline of a Wrap Dress

(DIY) How to cut and sew a Plunge Neckline dress with ease

How to fix a low-cut top or dress. 

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Shannon Sews: Fix a low neckline: adding a neckline binding to knits

How to customize your wedding dress neckline.

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How to fix a t-shirt with a tight neckline — Sum of their Stories Craft Blog

How to make round neck on top or blouse smaller Sewing hack. Tutorial. Custom alterations