Demi Lovato Responds to 'Cool For the Summer' Katy Perry Comparisons | Entertainment Tonight arrow-left-mobilearrow leftarrow-right-mobilearrow rightGroup 7Gallery Icon Copy 2Video Play Button Copy 5Hamburger MenuInstagramTwitterYoutubeShare Button7C858890-6955-48EA-B871-66CE1E33590CVideo-Playbutton Copy Skip to main contentncG1vNJzZmivp6x7psDOp6OippVjsLC5jqecsKtfZoN4fpFqlp2dnZ6srbvVmquol6KawLG7zZ2qmKyflLCwu8uYnaiqj6m1pqvSrqSmnaKUuKLA2Jinnqqirqyku8ypmKuho6S7tA%3D%3D