By now you should know better than to buy something that doesn't quite fit you. You don't want to  look like you are drowning in a sea of excess cloth. So if you want a quick hack into looking instantly better, here are five reasons why you should definitely only wear shirts that fit you.

1. Loose shirts are very unflattering

GQ

Too much cloth!

2. You might not be fat but the wrong cut can make you look worse

Steve Carell isn't that fat.

3. Your sleeves need to end where it needs to end.

4. Or that you're wearing a shirt-dress

Newsflash: only chicks wear shirt dresses.

5. A fit shirt makes you instantly more attractive

Oh yeah.