Angelina Jolie is apparently hooked on erotic novel Fifty Shades of Grey.

The 37-year-old has been vocal in the past about pushing the boundaries in her own sex life.

And after finally being persuaded to pick up the E L James novel by crew members on the set of her new movie Maleficent, the mother-of-six can't put it down.

"Angelina kept hearing about the book while she was in the UK," a source told Britain's Mirror newspaper.

"All the girls on set were talking about it and how it's being made into a film.

"Angelina went out and bought herself a copy, thinking she'd love a part in the hot topic on everyone's lips at the moment. She knows the film is bound to be a huge hit.

But seeing as Angelina is too old to play virginal graduate Anastasia Steele, she may be better placed to play Christian Grey's BDSM mentor, Mrs. Robinson.

"Ange is dead-set on a major part," the insider added. "She's up for the challenge."

Emma Watson and Scarlett Johansson are also said to be vying for roles.