I'm limited to the 50 lbs I can fly with (wardrobe and what gear I don't store/intend to buy in Reno), every new thing I find through the year means taking something out. It's tragic. The more mix-and-match a piece can be, the longer it'll stay through multiple suitcase repackings.
I try to get a few burns out of anything glamorous before pieces get donated to a costume camp to be reborn. Coats usually go the same way- though I'm sure I'll run into one that I want to hang onto eventually.
