Tutorial: How to Self Draft a Backless Summer Dress the thread By adding in 2 lines of boning to the front seams we were able to give more support and also smooth out the fabric around the torso. In the back the one side was gaping more and so making the Backless Bras Universal Cup Sizing System HerRoom Tutorial: Shirring with Elastic Thread the thread When a wedding dress is too small, the solution is not always to add fabric at the back , This gown needed more room through the bust and waist, so instead of changing the back, I added a side panel