Pop star Rita Ora has hailed her role in Fifty Shades Of Grey as a defining moment in her career because it opened the doors of Hollywood to her.

The R.I.P. singer plays Mia, the sister of Jamie Dornan's character Christian Grey, in the highly-anticipated big screen adaptation of E.L. James' erotic novel, and she has revealed the small part has given her acting career as huge boost.

She tells Britain's Ok! magazine, "For me this was such a great cameo to be involved in, and even though I'm only in it for a little bit, it's opened the door to a lot of movie things that I haven't actually announced yet... I have the (acting) bug, for real. Fifty Shades was... a really good wake-up call... It was nice to be a part of it and it opened a lot of doors... Fifty Shades is going to make a lot of waves, I'll tell you that much."