This is a muslin made after doing a FBA on Simplicity 3837 size 16. I'm not crazy about the fabric, but that's why I used it for a muslin. It has been aging in the stash for quite a while! I used my sewing machine, serger, and coverstitch machine on this top. I will now make one out of some fabric I really like. The top turned out OK! I added about 1" in both length and width to the top pattern piece. Had to adjust the back by the same amount so they met at the side seam.