Lol I am just glad they're a bit of a pack-rat, and they've got a couple bags of "old clothes", some never worn, gifts etc, they've been meaning to donate, but once we found out about an LGBT group that hosts a "free market" where you basically bring donations (or not if you don't have any) and browse for things you might need. It's been pretty much a clothing swap for all the trans members lol
I'm just lucky they canceled the last two meetings, or I wouldn't have anything left. Sucks they canceled this month though, I would have loved to go. I've got a bunch of clothing I never plan on wearing and some of the transmascs in the group are close to my size, one of whom explicitly said they wanted to find some shorts like the ones I had on at the time.
Sorry I tend to ramble....
Maybe you could find a foam push up bra at a thrift store, and might be able to utilize it? Worth a try!