Naomi Watts Celebrates 'Birdman' Best Picture Win with Brother Ben at Oscars After Party!

Naomi Watts happily poses alongside her brother Ben Watts at the Vanity Fair party following the 2015 Academy Awards at the Wallis Annenberg Center for the Performing Arts on Sunday night (February 22) in Beverly Hills, Calif.

The 46-year-old actress was in good spirits after her film Birdman picked up the award for Best Picture at the big show.

PHOTOS: Check out the latest pics of Naomi Watts

Also in attendance at the after party were Michelle Monaghan, Marisa Tomei, and Judy Greer.

FYI: Naomi is wearing Armani, Michelle is wearing a Monique Lhuillier gown, Marisa is wearing an Azzaro Couture jumpsuit, Stuart Weitzman shoes and Jason of Bevelry Hills bracelet, and Judy is wearing a Rubin Singer dress.

20+ pictures inside of Naomi Watts and others at the after party…