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On her "Neon Lights Tour" stop at the Izod Center in New Jersey over the weekend, Demi Lovato sat down with Z100's JJ.

The singer recently shaved the side of her head and tells JJ that her new 'do was an impulsive decision. She said, "We just like parted it, put it in a ponytail, I cut the ponytail off. I just did it."

She also talked about the tour, her mother's explanation of Beyonce's surfboard "surfbort" lyric (which she promises to reveal more on "The Tonight Show" with Jimmy Fallon"), her contributions to the Oscar-winning song "Let It Go" from Frozen, making her next album, and much more. 

Demi is set to appear on "The Tonight Show" with Jimmy Fallon tonight! Don't forget to tune in for some neon lights

Check out Demi backstage on her "Neon Lights Tour" below! 

JJ also hung out with Fifth Harmony and Little Mix. Fifth Harmony talked about life on the road, their pet peeves about each other, what would happen if they only had one hour to get ready for a show and had to share a dressing room and one curling iron!

Little Mix discussed life on the road, how they miss home cooking and their beds, having to always look their best, and their favorite dress down clothes. 

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