The Halloween star and her director husband Christopher Guest attended the annual Evolution Championship Series (EVO) as part of their graduation gift to their 18-year-old son Thomas.

Curtis and her family went unrecognised at the world's largest fighting-game tournament, and the actress revealed her costume on following the event on Saturday (18Jul15), boasting the temporary alter-ego, Street Fighter II cage fighter Vega, in a white mask, body suit and metal claws.

Meanwhile, Guest dressed as Tekken character Dr. Bosconovitch, while their son wore a Rastafarian-themed jumpsuit and boxing gloves to portray Street Fighter character Dee Jay.