The following celebrities need to grow up. And one of them turned 21.

Okay, NYC. Not too cold. I can handle this.Mon Dec 13 16:50:03 via ÜberTwitter

oliviamunn
oliviamunn

Oh grow up!

New Year's Resolution #1: get revenge on everybody.Mon Dec 13 20:15:39 via web

Rob Huebel
robhuebel

Oh grow up!

I see no difference between the angry birds and al QaedaMon Dec 13 17:34:40 via web

Jimmy Kimmel
jimmykimmel

Oh grow up!

Snowflakes are flurrying down outside and it's my last day of being 20!Sun Dec 12 20:27:48 via Twitter for iPhone

taylorswift13
taylorswift13

Taylor Swift grew up!

My baby threw up on me this morning. She really can't handle her liquor. No more beer for breakfast.Mon Dec 13 20:05:02 via web

Jim Gaffigan
JimGaffigan

Oh grow up!