Despite having a rough start to her marriage with an unfortunate spider bite, Katy Perry continues to look her best in a sequined red dress. Also, Rihanna is still sporting the hairdo from her newest video, "Only Girl (In the World)," and Katherine Heigl works hard at juggling her movie career with her new duties as a mom. Check out the entire gallery of photos to see what Paris Hilton, newly engaged Karina Smirnoff, and Lady Gaga are all up to.
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