Greatest weird ski costume ever

This is from Charade. Have you seen it? Audrey Hepburn follows Cary Grant all over creation, as who wouldn't. They're being chased through Paris by a band of killers yet have plenty of time to play screwy games. Here at the beginning of the film she has chosen to dress like a Mars bar from head to toe, ostensibly to go skiing, yet I fail to understand how she keeps her goggles on. Must be fused to the headgear.