u/Ravenclaw79

I’m putting together an order for bridging, and I’m a bit lost about what size vest to buy my daughter. She’s in a Medium (10-12) now as a Junior, and it’s a bit snug over a coat but otherwise fine. She wants the traditional-style vest for Cadettes, and we’re planning to get a new one for Seniors, so it only needs to last 3 years. But I know these are supposed to be growth-spurt years, and I don’t understand “Teen” sizing. I can’t just do the “estimate based on your own size” trick, because she’s built way different than I am — she’s thin and trim, and I very much am not. What size should I buy?