Kesha

From Ariana Grande to Gigi Hadid, read all about these celebrities' encounters with ghosts!

A judge ruled the singer defamed her producer in a text message to Lady Gaga.

Ashlee Simpson is just one of many stars who bungled sets on TV's most coveted stage.

Watch Kesha perform her star-making party anthem.

Lady Gaga defended Kesha against Dr. Luke's lawyer in an unsealed deposition.

Lady Gaga is finally addressing nasty texts sent between she and Kesha.

The pop stars' text convos were revealed in newly released court docs from Dr. Luke's defamation case against Kesha.

The singer gets deep (and silly) with Mark Ronson, Diane Warren and more for a roundtable of Oscar-buzzing songwriters.

The song was penned for the upcoming film, 'On The Basis of Sex.'

More, Dr. Luke's team claims Kesha's management conspired to 'ruin' him.