NEW YORK -- Selena Gomez is all grown up. The former "Wizards of Waverly Place" actress has traded in her Mickey Mouse ears for a two-toned bikini and a whole lot of scandal in the [article id="1684137"]upcoming "Spring Breakers."[/article]

"People will be a little shocked, I think," [article id="1687055"]Gomez told MTV News[/article] while promoting her new self-titled fragrance in New York on Saturday. "I'm a little nervous about it but honestly it's a right step for me, I'm really proud of it."

Also shaking their squeaky-clean images in the flick are "Pretty Little Liars" star Ashley Benson and Disney alum Vanessa Hudgens. The film follows the girls as they head to Florida for spring break, where they find themselves behind bars after robbing a restaurant.

"I think as an actress it really challenged me," Gomez said. "All of the other actresses are also trying to prove themselves, so it was just really, really fun."

Although Gomez is taking more chances with both her acting and music, there is still one role that is a little too racy for the 19-year-old: [article id="1687197"]"Fifty Shades of Grey."[/article]

"I know I'm taking risks but I don't think I could do that," she told MTV News. "That would be a little too much for me."

Gomez became familiar with the hot and heavy storyline after being approached to star in Funny or Die's "Fifty Shades of Blue."

"When they told me about the skit, I didn't know what ['Fifty Shades of Grey'] was about, so I started to read it and was like, oh, this is spicy, I thought it was good, it was intriguing," she said. "The skit was really funny."

So with all of this research under her belt, who does the 19-year-old think should play S&M-loving Christian Grey's object of affection? "Someone older should do that part," she replied.

What are your thoughts on a more mature Selena Gomez? Sound off in the comments below!

Check out everything we've got on"Spring Breakers."

For breaking news, celebrity columns, humor and more -- updated around the clock -- visit MTVMoviesBlog.com.