X Factor judge Demi Lovato has debuted a new hairstyle on The Tonight Show with Jay Leno. The singer showed off one of her more drastic hair makeovers, which she has often.

Lovato took to Twitter ahead of her appearance, writing, “LIKE NEON HAAAIIIIIRRRRR!!!!”

She also told her Twitter followers ahead of her appearance that she would be performing her new single “Neon Lights” on the show. “I'm on The Tonight Show with @JayLeno…TONIGHT performing #NEONLIGHTS for the first time on TV!!!!” she wrote.

Lovato has previously opened up about her experimentation with different hair colors and styles, telling MTV in May, "It's, like, my only form of rebellion. I don't drink. I don't do drugs. I don't party, so I'm like, 'Tattoos and hair color!'" She has also joked to Ellen DeGeneres, "You've heard I'm bipolar, so I change my hair a lot."

Lovato’s guest stint on Glee will start on Thursday night on FOX.

image: FOX