The doe-eyed pair of Zooey Deschanel and Katy Perry have long been confused for one another, but we have a helpful tip for telling them apart.

If the person in question is dressed like a cross between a hipster and a 1950s housewife, it's Zooey Deschanel. If she's wearing hot pants and looks like she might have stolen the clothes off a cartoon character and/or drag queen, it's Katy Perry.

You're welcome.

Zooey rose to prominence as the quirky-cute girl-next-door in 'Elf' and became a hipster's wet dream in '(500) Days of Summer.' She now stars in the sitcom 'New Girl,' where she essentially plays an underemployed version of herself.

Perry, on the other hand, made herself a household name by profiting off everyone thinking she was bisexual with the song 'I Kissed a Girl' (spoiler: she liked it). Since then we have been subjected to her vast array of Crayola-colored hair choices and a propensity for shooting whipped cream out of her cupcake boobs.

Still can't tell them apart? When you see one of them, look at the guy dangling on her arm. If he's not the kind of dude you'd want your dad to know you're with, chances are it's Katy Perry.

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