Kelly Clarkson can't stop talking about 'Game of Thrones'

The pop star has plenty on her plate: she's hosting next week's Billboard Music Awards, she voices a lead character in the new "UglyDolls" movie and she's a coach on hit singing series "The Voice." But don't get her started on HBO's hit fantasy series, now airing its final season. Clarkson is a full-on fan.