Demi Lovato released her fifth and sixth studio album in 2015 and 2017 .
In 2012 , Lovato became a judge and mentor on the U.S. version of The X Factor in its second season , and returned for the shows third season after the release of her fourth studio album , Demi ( 2013 ) , which debuted in the top three of the US Billboard 200 , while its lead single , `` Heart Attack '' , became her third top ten entry in the US .
Demi Lovato