Fitness model Sommer Ray took to Instagram on Monday to flaunt her ass-ets in a new Halloween costume — and she's definitely the sexiest cheetah we know!

She captioned the photo, "Trying to decide what I should be for Halloween.."

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The 20-year-old is no stranger to flaunting her enviable booty on social media, and we've rounded up some of her sexiest photos in the gallery below!