Taking the plunge! Ariel Winter showed off her décolletage in a peekaboo lace bra topped by a burgundy bodysuit with a deep V-neckline while out on a date night at the West Hollywood hot spot The Nice Guy on Sunday, January 31.

While seemingly everyone else was home watching Grease: Live, the Modern Family actress, 18, showed off her assets in the sexy number, which also included draped shorts, a black chain purse and lace Christian Louboutin pumps.

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Winter finished with a complementary oxblood statement lip, blushed cheeks and a casually tousled ponytail.

The actress, who voices Sofia the First for Disney, was snapped holding hands with her boyfriend, Laurent Gaudette. While the couple of two years seemed to split in December, they reunited for the star's 18th birthday celebration on January 28 and documented the occasion with a kissing video on Instagram.

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Since undergoing breast reduction surgery last June, Winter has been stepping out in increasingly sexy styles, including the low-backed Romona Keveza dress she wore to the 2016 SAG Awards on Saturday. In fact, the dress was so daring that it revealed just a peek at her scars from the surgery.

Speaking out on the choice via Twitter, Winter wrote, "Guys there is a reason I didn't make an effort to cover up my scars! They are part of me and I'm not ashamed of them at all. :)"

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