Four year-old Kai became a YouTube sensation when his impassioned cover of Bruno Mars' Grenade went viral. Ellen invited him to perform on her show, and, well, a star is born...
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The stars came out for HOV!
Brit Brit released her brand new video!
The President was caught taking a selfie with British Prime Minister David...
She talks lip injections, defends Kim Kardashian, and more!
Kim recreated one of Liz's most memorable photos
She's released her debut single!
Find out who else attended
He also promised to attend a three-month alcohol rehabilitation program and...