Hilary Duff & Mike Comrie: Casamigos Halloween Party 2013!

Hilary Duff dons a mouse costume while attending the 2013 Casamigos Halloween Party at the home of Mike Meldman on Friday (October 25) in Beverly Hills, Calif. The 26-year-old actress was joined by her husband Mike Comrie, who dressed up as a doctor. PHOTOS: Check out the latest pics of Hilary Duff Michelle Trachtenberg was