Lindsay Lohan In Locks Down

2/9/2011 10:30 AM PST

Linsay Lohan Get Hair Done The Day Before Arriagnment on Felony Grand Theft Charges for Allegedly Stealing A Necklace from Jewelry Store

Lindsay Lohan prepped vigorously last night for today's felony grand theft arraignment -- by getting her hair did!

Lohan, who will plead not guilty this afternoon to charges of stealing a $2,500 necklace from a Venice Beach jewelry store, got a haircut Tuesday at Byron & Tracey Salon in Beverly Hills. She was also rocking some noticeably plumper lips.

We'll be live streaming Lindsay -- and her new locks -- when she shows up for her 1:30 PM PT date with the judge later today!