Hilary Duff is Joined by Nicole Richie at Husband Matthew Koma's Concert in West Hollywood

Hilary Duff and Nicole Richie are enjoying a night out!

The 36-year-old Lizzie McGuire actress and the 42-year-old The Simple Life star held hands as they left Hilary‘s husband Matthew Koma and his band Winnetka Bowling League‘s concert on Saturday night (June 29) at the Troubadour in West Hollywood, Calif.

For their night out, Hilary wore a blue sheer blouse paired with black pants while Nicole sported strapless black top with jeans.

If you didn’t know, Nicole is married to Joel Madden...