May 16, 2007 06:00 AM

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

Heroes star Hayden Panettiere, falling in puppy love with Blasius – a 3 1/2-year-old dog she met at the Humane Society in New York. The actress was there to pick out an adoptable pet to accompany her down the catwalk for the upcoming Animal Fair Paws for Style fashion show. While in the Big Apple, Panettiere also scoped out The Plumm, where she enjoyed a deli sandwich in the VIP section.

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.


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