Ariel Winter Straddles Giant 'A' Sign in a Revealing Black One-Piece -- See the Booty-Baring Photo

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Ariel Winter is really emphasizing the "back" for her latest throwback Thursday post.
The Modern Family star got her #tbt on by sharing a booty-baring picture video to Instagram, rocking a revealing black one-piece swimsuit while straddling a giant red "A" letter sign in Los Angeles.

WATCH: Ariel Winter Celebrates Her 4-Month Anniversary With Levi Meaden in China
"#tbt to summer and long hair ?️➕?️," the 19-year-old actress captioned the photo.

Seems like she's got quite a view of the city... if a little obstructed.
Meanwhile, the body positive advocate recently celebrated four months of dating boyfriend Levi Meaden with a trip abroad!
Watch the video below for more!