First she went blue and now Demi Lovato dyed her hair bright pink.

The Heart Attack singer posted photos of her new look on both Twitter and Instagram with the captions, "#NEONLIGHTSTOUR."

The 21-year-old also debuted the new hair color when she went for dinner with her good friend Selena Gomez at Craig's on Thursday in West Hollywood, Calif. View photos here.

Perhaps the two needed a girls night out since earlier that day, Gomez's ex-boyfriend Justin Bieber was arrested for a DUI and drag racing.

Naturally a brunette, Lovato also experimented with more colors, including blonde last summer. The star said she had received mostly positive feedback in regards to that specific color change, she told People in July.

Selena Gomez Opens Up About A Past Fight With Demi Lovato in Seventeen

But, even if critics weren't a fan of her lighter locks, the former X Factor judge said she was not bothered by their opinion.

"I don't really care if people like it or not," she told the magazine. "I like being blonde and it's fun for the summertime."

She also revealed to the magazine that her spontaneous hair color change won't be her last.

"I never know what I'm going to do next," she said. "Maybe like a honey brown or a dirty blonde or something, so it's not too blonde."

Scroll through the gallery above to see some of Demi Lovato's different hair colors.

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Demi Lovato, Selena Gomez