Kelly Osbourne self-tanner

The controversial Ad. Photo: Splash News

Former wild child Kelly Osbourne has gotten burned for appearing in a self-tanner ad in the name of charity.

In a U.K. commercial for St. Tropez self-tanner, the superslim Osbourne says of the product, "I looked healthy, I looked, like, 10 pounds skinnier, and it started to make me look at my body in a different way. It made me look at what looked better rather than what I didn't like, and I kind of got addicted."

The campaign had been endorsed by The Prince's Trust -- a charity that helps disadvantaged youth and for whom Osbourne serves as an ambassador -- until public outrage forced the organization to remove its logo from the video.

"Telling impressionable young girls that having a spray tan and appearing on a reality TV show is the way to make yourself feel better is about as far off from my understanding of self-esteem as you can get," Abi Moore of British parents' group PinkStinks told the Daily Mail.

Osbourne, 25, says St. Tropez approached her when she competed on Dancing With the Stars last season. "'Everybody has to get a spray tan. I was really against it at first. It was against everything I believed in," she says in the video, which has since been removed from the St. Tropez Web site.

"Then I realized how ignorant I was being. They put a fluorescent pink and orange dress on me and I looked like Miss Piggy. But they said 'get a spray tan,' so I did and when I put the dress back on I could not believe the transformation."

In truth, the 5'2" Osbourne peeled off 42 pounds over the course of "DWTS," dropping from a size 14 to a size 2 by following a low-carb diet (think egg white omelets with turkey bacon, chopped salads, and turkey burgers) and doing 60-minute Pilates Bar sessions three times a week, she told Us Weekly in February.

This is the second time in recent months that Kelly has taken heat for her weight-loss statements. A British magazine lifted her Us Weekly interview and misquoted her as saying that "Being fat is worse than being a drug addict." An outraged Osbourne made it known that what she actually told Us was, "I took more hell for being fat than I did for being an absolute raging drug addict."

While Osbourne told Us, "I'm really proud to look in the mirror and not hate every single thing I see," StyleList thinks chances are slim that she'll be speaking out about her body again any time soon: "I've actually read in some magazines that I'm too skinny! You can never, ever, ever win."

In other scandalous celeb news, Megan Fox has gone bare in public.