Seeing the effects of middle age on his figure, Brad Pitt, 49, reportedly wears Spanx at all times.

A source told In Touch magazine: "They minimize the bad and accent the good. He's close to 50 and is showing his age."

We can't help but wonder if he'll wear them for his upcoming nuptials with Angelina Jolie.

Several celebrities admit to using the shapewear, including singer Katy Perry who is too lazy to work out and wants fans to know she's just like them.

She said: "I think one of my favorite moments is seeing like a hot girl dancing in a club, and then accidentally seeing her Spanx. People don't want to look up - they want to look across at someone. They want to feel like, 'Hey, that's my girl. I relate to your song. Maybe I felt something like that, but I didn't have the words to capture that moment like the Katy Perry song.'"

"The Help" star Octavia Spencer has also confessed to donning three pairs at a time to get a perfect hourglass figure on the red carpet.

She said: "I was not a Girl Scout, but I try to be very, very prepared. I triple Spank. Which is not good. Spanx really, really work, but you don't need to overdo it. It's wonderful because it gives you the illusion of an hourglass with the sand kind of spread out."