Halp. I'm going to a wedding this weekend and need semi-formal clothes because my entire wardrobe is either workout clothes or T-shirts. Suggestions for stores that will have slim fitting button up shirts and trousers? I'm helpless.

Halp. I'm going to a wedding this weekend and need semi-formal clothes because my entire wardrobe is either workout clothes or T-shirts. Suggestions for stores that will have slim fitting button up shirts and trousers? I'm helpless.