Hilary Duff Supports Husband Matthew Koma & Ex Joel Madden at When We Were Young Festival

Hilary Duff was one of thousands in attendance at the When We Were Young music festival in Las Vegas this past weekend! The 36-year-old actress joined the fun at the concert event to cheer on her husband Matthew Koma, who performed on stage at the fest. Matthew actually played guitar and sang backing vocals for [...]