Kristin Cavallari Bound, Gagged, & In Lingerie [Tyler Shields Pictures]

You know what they say about desperate times and fleeting famewhores…Former Laguna Beach/Hills starlet Kristin Cavallari is bound, gagged, and scantily-clad in lacy undergarments for a set of racy snapshots taken by envelope-pushing photog Tyler Shields.

Kristin pictured restraining her as she writhes around in lingerie in the raunchy pics. The MTV reality personality stripped down for the controversial pictures in an impromptu photoshoot last week, stepping in front of the lens for the same celebrity photographer who came underfire in April for taking snaps of a gun-toting, nearly-nude Lindsay Lohan smeared with blood and holding a pistol between her lips in a gory shoot that will appear on the pages of his new coffee table book, The Dirty Side of Glamour.

Cavallari insists her pictures with Shields were taken “just for fun.”