These shocking sick images show the depths of depravity Lindsay Lohan has sunk to in her battle against cocaine addiction.

Taken just weeks before she was admitted to rehab for the second time, the drugs-crazed 20-year-old wild child is captured holding a knife to a friend’s throat at a party.

The pal is also pictured sliding another blade down the Mean Girls star’s breast…

as Lindsay slips her own knife into her mouth in a chilling game.

A source told us: “These photos are very worrying. Lindsay is so out of control. She should not be left within a million miles of a knife. The states Lindsay gets herself into she is lucky to be alive.”