Bradley Cooper, Suki Waterhouse step out for ‘American Hustle’

Bradley Cooper has officially stepped out with his latest girlfriend, Suki Waterhouse.

The “American Hustle” star, 38, and British Burberry model, 21, attended the world premiere of the film at the Ziegfeld Theater on Sunday in New York City.

Waterhouse didn’t appear to be photographed with him on the red carpet, but joined his table of costars to have dessert.

PHOTOS: Our favorite ripped Hollywood hotties

“Guests were greeted with cocktails before entering the massive space, which was decked out ‘70s style, complete with sparkling disco balls,” a source told Us Weekly of the event hosted by Grey Goose vodka and Vanity Fair. “Cooper posed with fans for photos, and later caught up over dinner [with Waterhouse].”

The gray-clad pair first met at the Elle Style Awards in February and have reportedly been dating for nine months. They were first spotted together back in March while Cooper was in Boston filming David O. Russell’s film with Christian Bale, Amy Adams and his “Silver Linings Playbook” costar, Jennifer Lawrence.

Cooper, who plays FBI agent Richie DiMaso in “Hustle,” had just split from girlfriend Zoe Saldana, who then married Italian artist Marco Perego in July.

IN CASE YOU MISSED IT: SAG Awards nominations

The two have kept their relationship quiet, but with Cooper and “American Hustle” in the mix for award season, we imagine we’ll be seeing a lot more of him and his new girl, even if Waterhouse thinks they’re “boring.”

“I don’t talk about my boyfriend because it’s boring,” Waterhouse said in Elle UK’s January issue. “At least, that’s what I decided to tell you when you asked.”

“Look, maybe it’s best for me to say, ‘I’m not one of those girls who goes on about their boyfriends.’ I do think whatever I say will sound weird. But the truth is, if I start talking about him, I probably won’t be able to stop. And I don’t really want to talk about him, you know?”

ALSO:

Kate Winslet welcomes a baby boy with Ned Rocknroll

Adam Sandler, Katherine Heigl lead Forbes’ overpaid-actors list

Gisele Bundchen, supermodel mom, shares breastfeeding photo

Follow Ministry of Gossip @LATcelebs.