Katie Holmes was all smiles leaving her Broadway show, Dead Accounts, yesterday in NYC. It was Katie's 34th birthday, and she let her fans in on the excitement by signing autographs as she left The Music Box Theater. Earlier in the day, Katie celebrated her special milestone with Suri during a sweet stop at the Sugar and Plumm bakery. It's been a busy 2012 for Katie, who has been dividing her time between her stage and parenting duties. Katie's moving into the New Year as a single woman after she and Tom Cruise divorced this Summer, and their sudden split earned them a spot in our most shocking celebrity breakup of the year poll — cast your vote now!