Cactus wrote:3/2 roll sack suit
J. Press,
Brooks, or
O'Connell's
Actually, this is really good advice. It's a misconception that sack suits are not for slim guys. As long as you get one that fits, and it's properly tailored, they look fantastic.
For those who don't know, a sack suit has natural shoulders (very little to no padding), flat front pants, and no darts (means the jacket doesn't taper like an hourglass). They are generally 3-button, but the lapel rolls over the top button, so the stance is something like a lot of contemporary 2-button jackets (much higher than 2-button jackets were in the 80s, for example).
If you're skinny, unpadded shoulders and flat front pants are the way to go (seems counter-intuitive, but trust me). Also, the fact that these suits don't have a lot of waist suppression makes them look more professional than a lot of fashion brands.
J. Press is probably the way to go. Brooks doesn't carry many sack suits in the stores anymore, though they'll still do them made to order or made to measure. J. Press is a good value, for a well-made product that will last a long time and won't go out of style.