Hair color chameleon Demi Lovato has a new shade. The 'Give Your Heart a Break' singer is trying to see firsthand if blondes really do have more fun -- and she's giving her locks their first run in a cleansing retreat this week.

Lovato, 18, debuted her new look on Twitter this Saturday (Feb. 11), writing, "Thank you SO much Nine Zero One salon for my new locks!! How do you guys like the new look??" Her response was positive -- and positively overwhelming! Her fans ("Lovatics") loved it so much that her new hue became a trending topic: "Demi Blondevato." This amused Lovato, who wrote, "Ahhhahaha Demi Blondevato is a trending topic?!! Y'all are funny! Haha."

This is the latest in a series of color changes for the natural brunette. She went from her natural brown color to auburn to scarlet before settling down with her multidimensional flaxen shade.

Lovato revealed on Twitter that she'll be spending this week at a retreat. "Away on a mind and body cleansing retreat!!" she wrote. "This is exciting.. Won't be tweeting much this week but I love you my sweet lovatics!"

Lovato was rumored to be in rehab last month (which she denied) and took another break from her Twitter account during that time. While it's not clear what her retreat entails, we're glad she's getting her pretty blond head clear!