I finished this vest for a 14" doll a while back. I just sent it to our almost 10-year-old granddaughter. She turns 10 in 3 days. I really hope it fits one of her loved dolls!
It is really symmetrical - I just didn't get a great picture of the back.
I used the pattern Summer Vest for American Girl Dolls by Janet Longaphie. It's free on ravelry.com. I made a couple changes to the 'ribbing'. The yarn is Ella Rae Classic Superwash from my stash.