Happy 42nd, Christine Quinn! Other people around town celebrating today: Iman is 53, Mets pitcher Billy Wagner is 37, and restaurateur Geoffrey Zakarian is turning 49. Celebs celebrating this weekend: Kevin Spacey will be 49, Kate Beckinsale will turn 35, Mick Jagger will celebrate his 65th, and Sandra Bullock will be 44. Misshapes' Leigh Lezark will turn 24 tomorrow. Artist Tom Sachs will turn 42. Architect Hugh Hardy will be 76. On Sunday, Alex Rodriguez will turn 33. He shares his birthday with Taxi & Limousine commisioner Matthew Daus, hedge fund manager Timothy Barakett, and artist Dash Snow.