A British pop star is reportedly at the centre of a police investigation over claims he raped a 14-year-old girl after she was plucked from the front row of a concert.

The woman, now in her 50s, alleges that she was then invited back to his hotel suite and drank champagne on a balcony with the star.

The Sun on Sunday said she attended the concert overseas with her friends, but alleges her virginity was taken during the encounter.

The paper reports that she and her friends had hoped to meet the star and get his autograph, but only she was invited to the hotel room, where the star appeared wearing a short white robe.

The singer is then said to have led her onto a balcony where they shared some Dom Perignon Champagne, and he complimented her on her appearance.