Months of rehab and that ankle bracelet apparently weren't enough for Lindsay Lohan, who was arrested for drunk driving AGAIN early this morning at about 2:15am Pacific Time. Lohan, 21, was arrested after police saw her SUV chasing another vehicle at high speeds.

Lindsay failed a field sobriety test, and was transported to the L.A. County jail. A routine pat down search was performed, where police found a bag of cocaine in her pants pocket.

This morning Lindsay Lohan joined the likes of Paris Hilton and Nicole Richie by posing for her very own police mug shot, which you can view to the right of this article.

Could jail time be in her future? If Hilton can get it, Lohan could very well also.