Katy Perry adopts a look similar to her friend Rihanna for a concert!
Ciara opts for itty bitty shorts over a long shirt to show off her amazing legs!
Lady Gaga, shockingly, takes a stroll sans pants!
Lady Gaga hits the stage in glorified undergarments!
Miley Cyrus goes for torn stockings and barely there shorts.
Rihanna hits the stage in yet another pantless look.
Lady Gaga heads to a baseball game in a plaid shirt and, as always, no pants!
Lady Gaga — still no pants.
Taylor Momsen sneaks into Justin Bieber’s ‘Never Say Never’ premiere, leaves pants at home.
Jessica Simpson leaves a photo shoot in LA in just a green sweater and some very high heels!
Rihanna tries to give Gaga a run for her money.
Ke$ha joins the pantless pop star brigade.
Rihanna performs in a tight top and tiny bottoms!
Taylor Momsen ditches her pants while on The Warped Tour in 2010!
Lady Gaga — all hail the queen of pantlessness.