Lindsay Lohan has gone brunette - again.

The 23-year-old Lohan - who was blonde at last weekend's Golden Globes bashes -- showed off her new dark new locks Thursday. She then met up with Brody Jenner and Kristin Cavallari at L.A. club Villa, where ex Samantha Ronson was DJing, according to X17.

Lohan isn't the only star to switch up her hair this week.

Hayden Panettiere -- famous for being a blonde cheerleader on Heroes -- debuted new ginger tresses Wednesday at Miami International Airport.