The 39-year-old heiress — who celebrated Mother’s Day in the Big Apple earlier this month — teamed her frock with opaque black tights.
The blonde beauty wore her locks in an off-center part and pulled them back off her face.
She accessorized with a pair of oval-shaped black sunglasses worn on her lightly made up face.
Nicky, who is the younger sister of Paris Hilton, flashed her chest in her plunging look, which boasted a matching neck tie.
Style queen: Nicky Hilton commanded attention as she strolled through New York City in a black and white polka dot mini dress on Tuesday
Fashionista: The 39-year-old heiress teamed her frock with opaque black tights
Nicky, who shares three children with husband James Rothschild, sported a quilted black leather Chanel purse crossbody-style.
The bombshell took to Instagram to share an up-close snapshot of her Prada loafers with her 1.4 million followers.
It comes after the shoewear designer enjoyed a relaxing Memorial Day weekend with her family.
Turning to the photo-sharing platform earlier in the day, she shared multiple outtakes from the past several days.
Hilton began the 10-picture carousel with a selfie of her lying in a hammock.
She wore a blue knit sweater with an American flag on the front and she wrote in the caption, ‘MDW 23.’
Next was an adorable snapshot of her two daughters — Lily-Grace, 6, and Theodora ‘Teddy’ Marilyn, 5 — sitting side by side with matching braids.
Nicky, who also has a 10-month-old son, only showed the back of the little girls’ heads.
Footwear: Nicky took to Instagram to share an up-close snapshot of her Prada loafers
Downtime: The shoewear designer enjoyed a relaxing Memorial Day weekend with her family
Weekend outtakes: She shared an adorable snapshot of her two daughters — Lily-Grace, 6, and Theodora ‘Teddy’ Marilyn, 5 — sitting side by side with matching braids
She captured a sweet moment of her baby, whose name she has not revealed, crawling across a lush front yard.
Nicky’s husband James was also pictured in the photo dump twice.
Over the weekend the family traveled to New Jersey and attend one of Taylor Swift’s Eras Tour sold-out shows.
In one image Nicky showed James at MetLife Stadium holding their younger daughter at the show.
It was the sisters’ first concert experience, Nicky confirmed in the caption of a separate post featuring a video with Teddy dancing along to Swift’s performance.
Fernando Garcia, co-creative director of Oscar de la Renta, confirmed via Instagram that he joined the family at the concert.
Nicky commented on the post, ‘Best uncle award,’ along with a string of trophy emoji.
Baby boy: Nicky and James also share a 10-month-old son
Precious! In one image Nicky showed James at MetLife Stadium holding their younger daughter at a Taylor Swift show
Stepping out: Nicky Hilton steps out in a black polka dot dress while on a walk in lower Manhattan
Solo stroll: Nicky Hilton rocked an all black look for her stroll through downtown Manhattan
Crossing: Nicky Hilton crosses the street in downtown Manhattan
Hilton took to Instagram on Mother’s Day a few weeks ago to highlight the special moms in her life.
Sharing photos of her mother Kathy Hilton, sister Paris, and sister-in-law Tessa, she included a heartfelt message.
‘Wishing a Happy Mother’s Day to my amazing family of strong, caring, and loving mothers. You inspire me every day. I love you endlessly,’ she wrote.