Lisa Edelstein and Beau Garrett Party with BELLA New York in the Hamptons!

“Girlfriends Guide to Divorce” stars Lisa Edelstein and Beau Garrett celebrated their new cover of BELLA New York's Hamptons issue with some summer fun.

The women, who grace the cover with co-stars Necar Zadegan, Retta and Alanna Ubach, hit the red carpet at BELLA New York's 5th Annual Hamptons White Party at Southampton Social Club on Saturday.

Lisa and Beau clearly got the memo, and were decked out in head-to-toe white.

Guests at the party sipped on Prosecco DOC, while stopping by Brussels Airlines for a fun photo-shoot, learning more about Cachet Boutique NYC Hotel and checking out an Aston Martin provided by Long Island Sports Cars.

Edelstein and Garrett opened up about their roles in “Girlfriends Guide to Divorce” in the Hamptons issue.

Lisa said of her character Abby, “I had never been given an opportunity like this. Playing the lead role, playing a character whose emotional life and story ranged from high hilarity to intense drama, and getting the opportunity to write and direct, has topped everything in every way in terms of experience.”

Beau said she loved the premise and her character Phoebe from the get go. “I had always wanted to tell stories about love and all that goes with that journey, and this was a great vehicle.”