Kylie posted a snap of her sticking out her tush as she (ahem) 'worked out' in a mini-dress and killer heels in the gym on Instagram.
Maybe we didn't get the memo about this glamorous new gym trend because it's still all stinky sweat pants and bad lycra down our local Fitness First.
But glam as ever, Kyles didn't so much as work up a sweat as she straddled an exercise bike to pose for the snap.
And there we were thinking she kept her posterior in perfect shape by doing hundreds of lunges each morning.
Life just ain't fair sometimes.
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