Ariel Winter Bares Her Booty in Teeny String Bikini -- See the Risque Pics!

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Ariel Winter is at again!
The Modern Family star took to Instagram Monday night, posting a series of risqué snaps from an impromptu poolside photo shoot.
In the pics, captioned "Before&After," the 19-year-old actress sported a tiny black bikini that left little to the imagination. The first photo from the series shows Winter sitting on the ledge of a pool, playing with her hair as her friend tries to get the perfect angle.
And judging by the "after" pics, it appears her pal did a great job!
The lighting is seemingly perfect, highlighting Winter's voluminous booty, toned tummy and ample cleavage. Scroll through all three snaps below:

Last month, Winter decided to put a country spin on her provocative styling, rocking a revealing crop and tiny Daisy Dukes to a birthday bash for boyfriend Levi Meaden's mom.
Hear more on that look in the video below!