Tori Spelling getting her belly rubbed by her kids Liam, 4, Stella, 3, and Hattie, 6 months (Courtesy of Twitter/fameflynet)

Gwyneth Paltrow showed her bare butt at the Iron Man 3 premiere held at El Capitan Theatre in Hollywood, California on April 24th, 2013. (FameFlynet)

Anne Hathaway was famously caught bare-bottomed at the NYC premiere of Les Misérables on Dec. 10, 2012. (SplashNews)

Pippa Middleton went commando on September 20, 2011. (Getty)

MIley Cyrus was caught commando in a mini black dress on April 6, 2012. (FameFlynet)

Jennifer Lopez showed a bare waistline at the "Parker" movie premiere at the Planet Hollywood Resort and Casino on January 24, 2013 in Las Vegas, Nevada. (SplashNews)

Britney Spears showing it all at her son's soccer game on March 12, 2013. (PacificCoastNews)

Snooki went to the beach without underwear on August 15, 2010. (Splashnews)

Kate Hudson free and sheer at the Venice Film Festival on August 28, 2012. (Splashnews)

Poor Kourtney Kardashian! The wind revealed her no underwear choices on October 11, 2012. (PacificCoastNews)

Kim Kardashian, see-through and without underwear on January 3, 2013. (SplashNews)

Kimberly Stewart (Courtesy Photos)

Kimberly Stewart (Courtesy Photos)

Kimberly Stewart (Courtesy Photos)

Kimberly Stewart (SplashNews)

Kimberly Stewart (SplashNews)

Kimberly Stewart (SplashNews)