Channing Tatum and Matthew McConaughey confessed that stripping off on stage in front of hordes of screaming women had left them feeling scared.
The Hollywood hunks star in Magic Mike, a film about male strippers, directed by Steven Soderbergh and co-written by Channing, who worked as a stripper before he became an actor.
The pair attended a special screening of their new movie at London's Mayfair Hotel, where UK strippers Dream Idols bared almost all for a room full of women before the film.
Channing admitted: "It's definitely scary. When the curtain's about to move back you're like, 'Why did I want to do this movie again? I got out of this for a reason and now I'm experiencing it all over again.'"
Co-star Matthew agreed: "Hell yeah! It's intimidating to go out on stage like that. But it also becomes very fun. It's a big buzz."
The film also stars young British actor Alex Pettyfer and True Blood's Joseph Manganellio.
Channing revealed he was not able to prepare his co-stars for the reality of stripping in front of a live audience.
He said: "You can try as much as you possibly can, but those guys - they're not dancers and they haven't done it before.
"But they jumped in so hard and I commend them and respect them immensely for giving it their all."
Coronation Street's Brooke Vincent and Emmerdale's Roxanne Pallett were among the guests at the screening.