According to Hollywood Life:

Taylor Swift will play Joni Mitchell in the upcoming movie based on the 2008 book ‘Girls Like Us,’ says a new report. Keep reading for more details! Taylor Swift is set to play Joni, while Alison Pill is being tapped to portray Carole King, and Jessica Pare is in the top spot for Carly Simon in the biopic, reports The Sun. Taylor has had a few movie roles in her career, including Taylor Lautner‘s girlfriend in Valentine’s Day and voicing the character Audrey in The Lorax. This would be her first dramatic role.