Express

Most stores in the State Collegge area tailor for the average men size: large on the sides, wide on the belly, and big thighs. Shopping around for suits and shirts, I would always ask for the slimmest cut. Still, slim fit was never slim enough and I’m not even that skinny. Whatever I tried on, I’d always look like I was wearing a suit I was support «to grow into». Being close to 30 *sigh*, I don’t want to look like I’m a 15yo going to a wedding.
I am more than happy to recommend Express for thin/​athletic men. Their shirts fit me perfectly (I love the 1MX shirts), and so do the pants and jeans. They often use a little (2%) spandex in their cotton/​wool blends, which is actually helpful for the slim fit.
The staff at the State College Express store is also very nice. They will gladly offer coupons and discounts to you that can represent significant discounts (e.g. save $ 50 of $ 150, save $ 15 of $ 30, etc.) and sometimes even without you asking! If you don’t make sure to look on Ebay :)
On a last note, beware of going a little too crazy with some of their flashy color options, the shiny belts and super skinny ties. You might end up looking like you’re the hipster version of a Miami Vice character.
Edit: Not sure why this store is listed as «Women’s Apparell» in the title. Plenty of clothes for men although it’s true the selection is better for women!