Kim Kardashian The World's Most Expensive Gym Bag

2/19/2012 12:40 AM PST
Kim Kardashian and her Hermes Birkin
When Kim Kardashian goes to workout her million dollar booty, she doesn't just throw her sweaty rags in any old duffel -- she carries the world's most highly coveted handmade leather purse ... the Hermes Birkin.

Kim left a Beverly Hills gym on Thursday holding a black Birkin, which can cost anywhere from $9k to about $150k ... just ask Rick Yune​.

She's one bougie bag lady.