Lindsay's new hair is apparently for a movie called "Bobby" and she will have the blonde hair back for another movie around January!
"Us Weekly caught up with Lindsay Lohan to ask the singer/actress about her latest hair color change. "It's for a movie, 'Bobby'," Lohan said. "I'm going even darker." Asked how long she'd keep the current shade, Lohan responded, "I have to [go back to blonde] for another movie in January."