Christina Aguilera
Xtina is best known for her crazy incredible voice. She's been in the spotlight since she was a young girl, so it makes sense that she probably doesn't remember the time before she was famous, and apparently, she acts like it, too.
I'm a Celebrity!
Aguilera allegedly closed an entire store just so she could shop there, which is normal for very famous celebs, however, that also made the staff on the clock stay out of the store as well, so she wouldn't be "bothered." That's quite the wrong attitude to have!