The Week in Celeb Twitpics (PHOTOS)

Whether they’re at home with family or backstage at The X Factor, celebrities are getting silly with their Twitpics.

This week, Demi Lovato pulled a fast one on the sharp-tongued Simon Cowell with a little bit of cake.

Meanwhile, Khloe Kardashian and Britney Spears both spent a little quality time with their families.

What else was going on in the Twitterspehere this week?

Launch the gallery to see the week’s celebrity Twitpics.