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epaselect epa04328574 British singer/songwriter and actress Rita Ora performs during her concert at the Lucerne Blue Balls Festival 2014, in Lucerne, Switzerland, 23 July 2014. The music festival runs from 18 to 26 July. EPA/URS FLUEELER Image Credit: EPA

Singer Rita Ora says she found acting “difficult” as she kept forgetting her lines while filming her scenes for the upcoming erotica Fifty Shades of Grey.

The 23-year-old singer, who plays Mia Grey in the film, had to get help on the set because she couldn’t remember her lines, reports mirror.co.uk.

“I had to have someone in my ear on set telling me what to say before I said it because I was honestly, like, so nervous I forgot everything that I had learnt,” she said.

The blonde beauty credits her co-star Dakota Johnson for helping her get over her “first-time” acting fears.

“She’s (Dakota) a great friend of mine and she really eased me, and she was really nice to take care of me,” she said.