PA Photos/LandovPA Photos/LandovINFphoto.comINFphoto.comWe all may have our fashion secrets (padded bras, hidden platform heels), but 25-year-old singer Katy Perry is not ashamed of her Spanx! At her recent concert in Fort Lauderdale, Perry flashed her nude undergarments on stage after she was caught wearing them last month in New York. It seems the singer, like celebs Jessica Alba and Oprah Winfrey, all love their Spanx for taking inches off their figures.

Remember how supermodel Rebecca Romijn claimed she lost 60 pounds after giving birth to twins in December? That may be so, but she also admitted to Extra that she wore "Spanx underneath almost everything."

Lastly, let's not forget our favorite tabloid girl Lindsay Lohan. A gust of wind swooped up her designer dress and revealed some nude Spanx on the red carpet. Taking a cue from her idol, Marilyn Monroe? We think not.

Do you wear Spanx? Would you own up to it? [NYDN][NYDN]