Duran Duran singer Simon Le Bon has denied sexually assaulting a fan in 1995, saying the claim is "simply not true".
Writing on Facebook, Shereen Hariri alleged that Le Bon groped her while signing autographs at the Los Angeles store where she worked.
Le Bon denied Hariri's claims in a post on Duran Duran's official Facebook page.
"The behaviour that Ms Hariri has accused me of would have been just as inappropriate and unacceptable to me then as it is today. But the allegation is simply untrue," he wrote.
"When Ms Hariri first contacted me about her claim months ago, I proposed meeting with her in person so I could set the record straight. Instead, she has decided to pursue this publicly. I have always been one who can admit to my mistakes and apologise for my failings. But I cannot apologise for something I did not do."
Underneath the post, Duran Duran's publicist and assistant Katy Krassner added a comment defending the singer.
"I was also at the in-store event in 1995," she wrote, "and I can tell you that what he is being accused of DID NOT happen.
"Simon was never out of my sight that entire day, as each of the people on the Duran Duran team were 'assigned' to a band member to help with the record signing.
"Apart from anything else, as any fan knows, these kinds of events are a whirlwind of quick handshakes and photo calls which literally last a matter of seconds.
"The idea that he sat there, right next to his band mates, in front of a bunch of cameras, reaching behind him to sexually assault someone that day is simply ludicrous."
Hariri said she is not seeking compensation but only an apology from Le Bon.
"I decided that time’s up. I’m not holding this secret any more. I want everyone to know what this man did to me. I hope he comes clean publicly. I hope he make amends to his wife and daughter," she wrote.