Ariel Winter's booty takes work!
The Modern Family star took to Instagram on Monday to show off her intense workout.
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"Working the ? with @mackfit ?," Winter captioned the video of herself working her backside.
The 19-year-old actress, who hit the gym with boyfriend Levi Meaden, showed off her toned abs in a black-and-white sports bra and trendy leggings. Meaden, 29, looked casual in a blue tee and shorts.
Winter and Meaden recently celebrated their 9-month anniversary. See more in the video below.