Rita Ora thought 'Fifty Shades of Grey' was "like going back to school".
The British-Albanian singer had to learn French for her role in the raunchy adaptation of E.L. James' novel, as well as perfect her American action.
She told MTV News: "She's honestly one of the ones that loves her brother [Christian Grey] for whatever.
"She doesn't know about his fantasies yet, but she's extremely involved and loves him and she studies in France, speaks French, and it was a good learning curve for me ...
"I had a brown wig on and I was being the smart girl that came from French school to see her family, so it was just a lot of dedication, it was like going back to school."
Meanwhile, the star revealed she learned a lot from working with Dakota Johnson, who will play Anastasia Steele.
She said: "Working with Dakota was extremely fun she's just so gorgeous so it kind of distracts you a little bit, but I mean she's a really great ... she's an amazing actress so I'm like learning things from her."