I never really been in the market for suits. It's one of those things that seems not to have a point for most people in game development. I've known people to work in their pajamas or worse.
But, recently I was looking for a suit and so for the first time since I've been in Japan I went suit shopping and I found a couple of incredible places. One is call The Suit Factory. It makes me wonder if they are from England since their website is www.uktsc.com. The other is Suit Direct.