Most celebs are mortified when they accidentally expose themselves by wearing sheer clothes in front of a photographer's flash.

But Kim Kardashian must be made of stronger stuff, because she has opted to post a snap of herself inadvertently showing off her chesticles in front of 100,000 music fans on her Instagram account.

Kim was posing for a personal snap in front of the masses at the Bonnaroo Music & Arts Festival in Tennessee last night.

She wrote: "Oh hey 100,000 people! #Bonnaroo"

But her followers on the social networking site mostly responded by saying things like: "Oh hey, we can see your boobs."

Despite having been up for just over nine hours at the time of writing, the picture had already amassed more than HALF A MILLION likes.

We can't imagine why.