London Entertainment/ Splash News Online
May 23, 2008 04:20 PM

Summer officially kicks off this weekend and celebrities coast-to-coast are busting out the sunscreen and the barbecues to celebrate Memorial Day.

Ashley Simpson and Pete Wentz may be crashing in New York City post-honeymoon, but other stars are headed even further East to start summertime in the Hamptons.

• Molly Sims is throwing herself a birthday with French Connection at The Estate on Saturday Night.

• Simultaneously, The Kobe Beach Club has a private dinner hosted by Jeffrey Chodorow, featuring a performance by Estelle.

• Also on Saturday night, Kim Cattrall is hosting Hamptons Magazine s 30th anniversary in Southampton, while Whitney Port, from The Hills, kicks off another social gala in Watermill.

Kim Kardashian is expected to make an appearance Sunday at the Hampton Bays nightspot The Whitehouse.

Meanwhile, on the West Coast, the Tropicana Bar at the Hollywood Roosevelt Hotel will be presenting a pool party Sunday and Monday – Swimsuits a must!

• The beach is more Pink’s scene, and the singer is hosting a private BBQ on Monday at her Malibu house.

Pamela Anderson is doing her own BBQ Saturday at her Malibu home.

And don’t forget about Sin City!

Dancing with the Stars pros Mark Ballas and Derek Hough are having a joint birthday bash at the Bellagio hotel’s Bank nightclub.

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