updated 05/14/2007 AT 2:00 PM ET
•originally published 05/16/2007 AT 6:00 AM ET
Sienna Miller, taking a break from filming her upcoming flick The Best Time of Our Lives in South Wales by hitting the Big Apple for a day on the town.
Gwyneth Paltrow, playing the part of proud mama along with rocker husband Chris Martin as their 3-year-old daughter Apple took the stage with her nursery school class in Santa Monica for a spring show. Grandmother Blythe Danner added to the cheering squad.
Jamie-Lynn Sigler, ringing in her 26th birthday at boyfriend Scott Sartiano’s club Butter, where she’s a fixture. The Sopranos star, in a strapless satin dress, enjoyed white frosted birthday cake before some serious dancing to Gwen Stefani’s “The Sweet Escape.” The group, who stayed well past 3 a.m., became really rowdy during a medley of Jay-Z songs. And, as it turns out, the hip-hop mogul was in the house, sitting with friends while his music played. Also making the Butter scene: Grey’s Anatomy stars Justin Chambers, with wife Keisha, and Sara Ramirez and current ER heartthrob John Stamos.
Naomi Watts, chatting up fellow mom-to-be (and Dancing With the Stars host) Samantha Harris during the launch of Escada’s Beverly Hills store. The pregnant pair sipped Evian water while “sharing pregnancy stories,” according to an onlooker.
By TIFFANY HOPKINS, MARY MARGARET and JON WARECH