Kate Winslet picking up her kids from school with her ex-husband, Jim Threapleton ... David and Victoria Beckham shopping on Fifth Avenue ... Michelle Williams' daughter Matilda walking in the rain with her nanny ... Mariska Hargitay walking on the street ... Ali Larter outside the Today show ... Katie Holmes, Tom Cruise, and Suri leaving Alice's Tea Cup on East 64th Street ... Jennifer Hudson showing up to an appearance on BET's 106 & Park ... Michael Cera and Julia Louis-Dreyfus outside the Letterman show ... Jennifer Lopez making an appearance at Macy's in Herald Square for the launch of her new fragrance ... Rapper T.I. leaving the Waverly Inn ... and Britney Spears leaving Serendipity 3 with a bunch of handlers.