Christina Aguilera is clearly not letting her pregnancy slow her down but she looks like she's had enough already. The starlet with super straight hair held her tummy and expressed some frustration while making her way around Hollywood. We love the Lanvin flats she's sporting with those skinny jeans. Christina is due very soon, which could be why she is clutching onto her Blackberry for dear life. She's scheduled for a c-section on Thursday but who knows, her baby might be coming early.