Tiger Woods' Alleged Mistress -- I'm Not Guilty!

She may be guilty of felony homewrecking, but Jaimee Grubbs insisted in Bev Hills court this AM ... she did not break California traffic laws.

Grubbs appeared before Judge Marsha Revel, who's handling another famous alleged lawbreaker -- one Lindsay Lohan.

Grubbs pleaded not guilty to two counts of driving on a suspended license. TMZ broke the story ... Grubbs was arrested in West Hollywood back in April on outstanding warrants.

0614_grubbs_small_v3She's due back in court on August 4.

Outside of court, Jaimee was holding hands with a new man ... who we assume isn't married.