“X Factor” judge Demi Lovato is joining the cast of “Glee” as Dani, one of Rachel’s struggling artist friends in NYC.

‘Glee’ News! Demi Lovato and Naya Riveria to Sing Duet
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GossipGirl.com reports Lovato will team up with Naya Rivera aka Santana for a duet, singing the Beatles tune “Here Comes the Sun.”
“Glee” returns for a new season on September 26 on FOX!