Kardashian Curves -- Guess The Planking Princess!

“The princess is in the building!” -- the iconic line that introduced this OG influencer to TV audiences back in 2007 ... Can you guess who she is?!

We snatched her looking snatched in a behind-the-scenes video for her collab with Nike.

Hit the gallery for the reveal! and then put your Kardashian knowledge to the test: