Sep 28, 2007, 23:18 GMT
Mandy Moore "went for it" during love scenes for her appearance on a TV show.
Mandy Moore - © Lee Roth / RothStock / PR Photos
The brunette singer-and-actress, who is renowned for her squeaky clean image, quickly overcame any awkwardness during her steamy scenes with actor Josh Radnor for US TV show 'How I Met Your Mother'.
Radnor told America's OK! magazine: "Mandy went for it! She was a really good fake kisser. We had fun."
Mandy has been working hard to rid herself of her good girl image this year.
The 23-year-old star sexily gyrated around a silver pole during an interview with online celebrity gossip columnist Perez Hilton last month.
She got so involved in the routine she even ran her tongue along the pole at one point.
In July, Mandy revealed she felt sexiest as a teenager and had made the transition from childhood to dating guys far too quickly.
She said: "Oh! Making love on the floor is so taboo! I went from being a child to making love on the floor. There was no intermediate step.
"It's funny - I think that my sexiest time was at 15 - my gawky body, swaying like a little stick figure. My most overtly sexy thing was the first one, right off the bat."
(C) BANG Media International
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