From Halloween to the Superbowl, celebrity dance cards are filling up, coast-to-coast.

—Avid Halloween fan, Heidi Klum, will be hosting not one, but two parties for fright night. The first fete will take place in Vegas, followed by a quick hop to the Big Apple, where the mom-of-four will close out her evening. We can't wait to see her costume(s). [New York Post]

—Ab Fab is back! Joanna Lumely and Jennifer Saunders have begun to shoot the final season of their much-missed series, which will premiere on BBC America early next year. [Entertainment Weekly]

—Jennifer Aniston visited breast cancer survivors in Virgina with Vice President Biden's wife, Jill, and Human Services Secretary, Kathleen Sebelius. The actress has directed a short film for Lifetime about how the disease affects women, which will air later this month. [Yahoo! OMG]

—Curious about the buzzed-about BB cream fad? The editors at Bella Sugar explain the hype behind these skin-care staples.[Bella Sugar]

—Madonna is slated to perform the half-time show at the Superbowl. Perhaps protégé, Gaga, will make a guest appearance.[NFL Sporting News]

—Amanda Knox's appeal was upheld by an Italian court yesterday. The American is likely on her way back to the States, and the cable networks are undoubtedly deploying hoards reporters to Seattle... [MSNBC]