You don't have to know the difference between a black tie and a white tie wedding to know that there are certain things you should never, ever wear to someone's Big Day celebration: booty shorts, bra tops, crocs, old t-shirts, etc. Even at the most casual affairs, there is a certain expectation that you at least look like you didn't (a) just roll out of bed or (b) come straight from a nightclub to the wedding.
Check through the pictures below