Celebs aren't always fabulous!

spotted on the MVA'S on Katy Perry: a Grill...
First off: it's a rappers thing.... 

No, they don't even get away with it!

“a gold/diamond plate that is moulded for your teeth. it is decorated with diamonds and/or gold. usually worn by rappers.” (as stated in the urban dictionary) 

Miley Twerking Cyrus 

Madonna 

Mademoiselle Gaga 

Miley Cyrus

Rihanna 

Riri again 

Beyoncé

Nope, sometimes, even the rich and famous don't get it right!