Hilary Duff: Gym Session Before Halloween!

Hillary Duff flashes a smile for photographers while heading back to her car after leaving a gym on Wednesday (October 30) in West Hollywood, Calif.

Over the weekend, the 26-year-old actress and her husband Mike Comrie showed their support for her older sister Haylie at a signing for her new cookbook “Real Girl’s Kitchen”.

PHOTOS: Check out the latest pics of Hilary Duff

Last week, Hilary was spotted rocking a mouse costume while attending the 2013 Casamigos Halloween Party at the home of Mike Meldman.

FYI: Hilary is wearing a Chan Luu scarf.

10+ pictures inside of Hilary Duff leaving the gym…