With a more mature film role comes a more mature wardrobe! Ashley Benson slipped into a glamorous cleavage-baring Amit GT gown at the Spring Breakers premiere at Le Grand Rex in Paris, France, Feb. 18.

The 23-year-old actress got ready for the red carpet event with her costar, Rachel Korine; Benson documented the experience in a series of Instagram pictures. "Wow. Such an amazing night. I love my French fans," Benson tweeted. "You are all amazing. So supportive and wonderful. Love you all so much."

PHOTOS: Spring break bikini bodies

Benson also shared pictures from the premiere with costars Selena Gomez (in Gucci) and Vanessa Hudgens (in Rafael Cennamo). The actress -- best known for her role as Hanna Marin on ABC Family's Pretty Little Liars -- plays a "troubled teen" named Brit in the film, directed by controversial Kids scribe Harmony Korine. The film centers around four college students who rob a restaurant in order to fund their spring break trip.

"She's fearless and really bold," Benson tells Us Weekly of her character in the R-rated film. "She does whatever she wants, whenever she wants. She's not afraid of danger and she's very adventurous and she's very crazy and wild. It's very different. Extremely different from Hanna. It was fun to play. She's completely different from anything I've ever played before."

PHOTOS: Top 10 movies of 2012

Spring Breakers was shot on location in St. Petersburg, Florida, in the spring of 2012. "There's not much to do over there, but every day on set, it was huge party and it was really insane. I saw the craziest stuff," Benson recalls. "Selena and Vanessa are some of my best friends. It was so fun to work with them."

PHOTOS: Stars wearing too-tight bikinis

Benson is excited for fans of Pretty Little Liars to see her tackle a darker role. "People will get to see a different side of me that they haven't seen before," she tells Us. "I'm really excited about that."

This article originally appeared on Usmagazine.com: Ashley Benson Flaunts Cleavage in Sexy Gown at Spring Breakers Premiere