Demi Lovato's Single Might Be "Cool For the Summer," but She Only Knows How to Be Hot

Demi Lovato is spreading her hotness all over. Now that she's shocked us all with her toned body on the cover of the September 2015 issue of Cosmopolitan and with her hot music video for her single "Cool For the Summer," she's taken her fierce new look to Australia to sing on The Voice. Demi performed with an all-girl band and in front of a live audience, wearing yet another skimpy bikini top. After snapping a selfie with judge Jessie J and posing for pictures with Ricky Martin, Joel and Benji Madden, and Australian triple-threat Delta Goodrem, Demi headed to the zoo to hang out with koalas and kangaroos. "Guys . . . F*cking kangaroos!! Literally SO happy!!!! I love Australia!!!" she captioned one of her Instagram pictures. Keep scrolling to see more snaps of Demi's trip to Sydney, then check out two Kardashians who can't get enough of her music.