04/14/2009 AT 06:00 AM EDT
was treated to a rousing version
of "Happy Birthday" – and a cake at lunch – on a break from
shooting New Moon
in Vancouver. That night, the actress, who
turned 19 on April 9, ventured out with Robert Pattinson
and fellow castmates at Chill Winston, a trendy
restaurant. The following night, the (birthday) party continued – and
the group dined at Rodney's Oyster House in Yaletown, where they ate oysters
and enjoyed scotch and beers followed by a seafood and steak dinner.
Meanwhile, in L.A. Gwyneth Paltrow
and Chris Martin
threw a belated birthday party for their son Moses
who turned 3 on April 8, outside the family's Brentwood home.
Younger guests – including big sister Apple
and Violet Affleck
(dad Ben Affleck
was there, too!) – were
treated to fruit and juice, while the patio was outfitted with animal
, sharing a group sing-along on the
patio of West Hollywood's Chateau Marmont. The actress tuned up when the
hotel's guitar player approached her table, sat down and started strumming.
She sang along wholeheartedly to tunes like "Take Me Home, Country
Roads" and "You Are My Sunshine." And when she wasn't singing, Diaz and her pals
were laughing over their meal. Nearby, Parks & Recreation
hung out with hubby Will Arnett
's John Krasinski
, sharing salads and a slice of
cake with two girlfriends at Huckleberry in Santa Monica. Absorbed in
conversation, the three didn't take any notice of the other lunching diners
– though a few patrons were indeed scoping out Witherspoon.
, making the club rounds in Las
Vegas. On his itinerary: Blush and XS, followed by a night out at the Palms'
Playboy Club, where the singer took a VIP table with his party of eight.
Once inside, Timberlake enjoyed some tequila shots and conversation with his
By PERNILLA CEDENHEIM, JENNIFER GARCIA, MARK GRAY, MAUREEN
HARRINGTON and CHRISTINE KILPATRICK
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