From Tia Mowry to Rihanna and Alicia, see the week's hottest celeb twitpics.
We love going behind the scenes with our favorite celebrities on Twitter.
This week, Tia Mowry gets playful on the set of her reality show, "Tia and Tamera," Alicia Keys celebrates her 31st birthday luxuriously, and Rihanna shocks fans with a new tattoo that reads "Thug Life." There's a never a dull moment in celebrity Twitter-ville.
Take a look at our favorite twitpics of the week!