Selena Gomez is looking pretty in pink!

The Spring Breakers star joins Seth Rogen, Rose Byrne, and Zac Efron for Neighbors 2, the follow-up to last year's massively successful summer comedy, and looks totally sexy and cool for the summer in a layered pink mini-dress in a new on-set shot!

PHOTOS: Hollywood's Hottest Bikini Bods!

Selena, who plays a sorority sister in the sequel to the 2014 film, was captured shooting a scene where her sorority sisters surprise her with a shiny red new car.

An eyewitness tells ET that a happy-looking Selena brought her bodyguard to set and acted super nice with fans who waited for her outside.

One person who's also filming in Atlanta is Selena's good friend, Jennifer Aniston! Hopefully, the two have time to catch up, as the 23-year-old actress has absolutely raved about the Friends star in the past.

"I have not only been following her career as a fan since I was 8," wrote Selena in an Instagram post in December 2014. "I have gotten to have real conversations with such a real heart, made my entire year."

WATCH: Selena Gomez Talks Friendship With Jennifer Aniston: ‘She Gives Me Maternal Advice’

What we'd like to know, of course, is how Justin Bieber must feel about his ex acting in a movie with Seth Rogen, who has publicly shamed the 21-year-old singer in the past. On top of that, apparently Selena was subtly referenced by Bieber in his new music video for "What Do You Mean?" A blink-if-you-miss-it moment seems to feature her name spray-painted on the wall.

WATCH: What Was Selena Gomez Doing While Justin Bieber Sobbed at the VMAs?

Meanwhile, Selena exited the venue at the 2015 MTV VMAs just before Justin's emotional set last Sunday, thereby robbing us all of her reaction to the "What Do You Mean?" singer breaking down crying after his set.

Selena did open up about Justin to U.K.'s Sunday Times recently, where she expressed some frustration that the two are so linked by the public.

"It's difficult for people to separate us," Selena admitted. "The Internet wants to freeze this moment in time and constantly repeat it."

WATCH: Selena Gomez Posts Underwear Pic, Reveals Why She No Longer Wears a Purity Ring

Watch the video below for Selena's racy Instagram underwear shot that she later deleted.