For better or for worse, Courtney Roberston is a now a part of The Bachelor family.

On Thursday, Ben Flajnik's fiancee — famous for trash talking her rivals and manipulating Flajnik on season 16 of the show -- enjoyed a date night out with her man at SVEDKA's Night of a Billion Reality Stars bash in Los Angeles, and couldn't resist getting in a little girls' time with ABC Bachelorettes Ashley Hebert, Ali Fedotowsky and DeAnna Pappas.

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"All of the girls rallied around Courtney. They danced and drank together but Courtney seemed to be the Queen Bee. If she wanted to take photos, all of the girls took photos. If she wanted to dance, all of the girls danced," an eyewitness at the party tells Us Weekly, adding that Robertson spent most of her time chatting with Fedotowsky and Hebert.

Hebert praised Robertson for the way she handled her much-scrutinized engagement. "The truth is, you go through [the show] and learn about yourself, you learn about what's right and what's wrong," she told Us. "Courtney probably came out of it a stronger woman."

VIDEO: Ben and Courtney go skinny dipping

The Bachelor and Bachelorette gang may have been the largest group at the SVEDKA bash, but Bravo's Housewives also showed up in large numbers.

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Beverly Hills' Kyle Richards bonded with New Jersey Housewife-turned-Celebrity Apprentice cast member Teresa Giudice, while Gretchen Rossi, Brandi Glanville and Dana Wilkey mingled nearby.

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