Things are certainly heating up for Rita Ora, both in music and on the big screen.

The British pop star landed the role as Mia Grey in the highly anticipated erotic flick, "Fifty Shades of Grey," a casting that certainly came as a surprise to the singer, since at first she approached production to jump on the film's soundtrack.

"The director [Sam Taylor-Johnson] said 'Why don't you audition for Mia Grey? We don't have a part for her yet,' and I was like, 'Well, I've never done a movie before,' " Rita said after revealing she didn't get any "special treatment" and auditioned with hundreds of other hopefuls. "So I did, and then it goes through loads of people, the whole movie company."

Rita admits she put music aside to commit 100 percent to the role of Mia, which at times proved pretty challenging.

"I definitely had coaching, acting coaching. I have an American accent in the movie. I've got a brown bobbed wig. I look really different," Rita said. "It was really nice to get into a whole other world that I wasn't used to, but it was pretty difficult."

So what was her secret to turning her British accent to American?

"Literally on set I had the accent coaches there whispering it to me in my ear and we would shoot straight away. It was really hard," she admitted.

Now for those of you fans who are wondering if the S&M scenes will translate from the book to the screen, fear not, since Rita admits the steaminess films up the screen.

"I cant give too much away because I'm sworn to secrecy by a whole army of 'Fifty Shades' people, but I can say there's a really spicy scene..." Rita said. "All I'm saying is that it's surprising, you can feel it in the air like when you rub your fingers."

Not sure exactly what that means, but Rita, we will take your word for it!