Updated: Mon, 26 Aug 2013 20:15:00 GMT | By Cat Collins, contributor, MSN Celebrity
Robert Pattinson slams Twilight fans and other celebrity fandom fails

Justin Bieber

Previous5 of 10Next
Share this Gallery

The Biebs doesn't mind being approached by fans - but he does have some strict rules in place about how to do it.

The singer told Teen Vogue back in 2010: Just talk to me. Ask me how I'm doing. Introduce yourself instead of yelling, 'Justin! Justin! Justin! Can I have a picture?'

"And don't come up to me while I'm eating. How would you like it if I came into your house and started taking pictures of you while you were eating? I hate that."

Have you all got that? Good.