I've been going back and forth between a suit and jacket or something more casual like a vest. My concern is that he is skinny. He was a groomsman for a friends wedding and honestly looked a little silly in his suit (mostly the jacket). I know that we would probably buy whatever we chose so that it can be tailored. But also part of me likes the more casual look of just the vest, and I know he'd probably be more comfortable anyway.
We're going to check out Men's Warehouse (and probably the mall as well) this weekend and I'm just trying to get some idea.
Thanks!