The 'On the Floor' hitmaker performed on the talent show on May 28 wearing a black bodysuit that flashed her bottom cheeks, reported a website.
"I think people are so much raunchier than I am. I feel like I'm so tame. We wore it at 'Billboard' and 'Britain's Got Talent' said they wanted exactly the same. So I thought I'd wear the outfit in black. No-one complained at 'Billboard'. I think people just like to talk. It was a body suit. A lot of performers wear that these days. It is standard stage clothes. I'm not going to walk down the street like that!," she said.
The 43-year-old singer will perform at this weekend's 'Sound of Change Live' gig.