Have you ever sewn a garment only to try it on and find the neckline is sitting away from your body? Fear not, I'm going to share with you my five top tips on how to fix a gaping neckline on a variety of garment styles, including high, deep and wrap necklines, on both knit and woven fabrics.
1. Stabilise those seams! (woven or knit fabrics)
If you thought that stabilisers were just for kids' bikes, then think again! Ok fine, you don't have to add actual wheels to your neckline, but stabilising a neckline seam can help prevent it from stretching out both from sewing and wear. This is a particularly good idea if you're making something with a bias-cut (diagonal) neckline, such as the Alexa jumpsuit or Pearl cardigan.
For a woven fabric, try stay tape or twill tape, a flat woven ribbon that you can buy in different widths. Stitch it to the neckline within the seam allowance, close to where the stitching line will be.
For knits or woven fabrics, a great option is iron-on seam tape, AKA my new best sewing pal. It has a slight stretch to it, making it super easy to apply to curves and, as it's fusible, you don't need to sew a single stitch - just press it in place, again, within the seam allowance and close to the stitching line.
If you don't have these to hand, cut iron-on interfacing into narrow strips and use it the same way. This is a perfect way to use up interfacing scraps that you've been hoarding.
2. Fabric recovery is your friend (knit fabrics)
All knit fabrics stretch to some extent - this is of course why we love wearing them and what they are designed to do. But some will stretch whilst you wear them and continue to stretch as the day goes on without snapping back to their original size.
A fabric with good "recovery" returns to its original state after stretching, without becoming baggy or distorted. Using a fabric with a good recovery is especially important when making something with a neckline that you want to keep the same shape and size, such as the wrap neckline on the Pearl cardigan or the scoop neckline on the Agnes top, as it will help it keep its shape.
To check if a knit fabric has a good recovery, cut a swatch and measure it. Pull the fabric lengthways and widthways a few times, then set it down and measure it again. If it easily pings back to the same size, then this indicates it has a good recovery - yay! If your swatch is left slightly bigger post stretching, it indicates that the fabric doesn't have a good recovery and will most likely be more prone to growing with wear.
3. Consider shortening the neckband (knit fabrics)