On this episode of "You Sang My Song," Fergie watches YouTube fan covers of of her songs "You Already Know" "M.I.L.F.$," "London Bridge," and "Big Girls Don't Cry." Fans react to Fergie watching their music. "The Four: Battle for Stardom" airs Thursdays at 8/7c on FOX @TheFourOnFox (#TheFour) on Instagram, Twitter and Facebook. Watch the covers: Stacy Kay: https://www.youtube.com/watch?v=gceiV8XNy00 Lumberjacks: https://www.youtube.com/watch?v=b_91DFsN-Xs Sarah France; https://www.youtube.com/watch?v=ZUCjRh4HUpk Rachel Correll: https://www.youtube.com/watch?v=zpzLE8AlDFA Still haven’t subscribed to Glamour on YouTube? ►► http://bit.ly/2gYlQqe Fergie Watches Fan Covers on YouTube | Glamour