Nicky and Paris Hilton show off their stunning figures to promote the Valentino The Party Collection

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The socialites Nicky and Paris Hilton promoted a set of stunning dresses from the Valentino The Party Collection on Instagram on Thursday.The pair — the daughters of fashion designer Kathy Hilton — wore complementary black and white dresses with cut-outs to show off their toned midriffs.Valentino's social media shared the images, captioning them: 'All @parishilton and @nickyhilton want for Christmas is #ValentinoThePartyCollection.' The duo: Nicky and Paris Hilton showed of their stunning figures while promoting a new line of dresses from ValentinoNicky, 39, posted the photos shortly after to her account and said: 'How fitting when @MaisonValentino asks you to model the party collection with the ultimate OG party girl.'Paris, 41, wore a black cut-out Valentino Chain Motif minindress with thin fishnet stockings underneath.

She also had on a pair of matching black strappy heels, and her soft blonde hair was let down in light waves framing her chest.Nicky had on the long white Chain Motif gown, which showed off her natural curves, and her shiny blonde hair was styled down in tighter curls around her chest.

Little black dress: Paris wore a mini dress with thin fishnet stockings and her gorgeous blonde hair down in light waves They both had immaculate makeup looks featuring smoky eyeshadow and light pink lipstick.Paris and Nicky have done several photoshoots and campaigns together during their time as American socialites, including shoots with Vogue and Billboard.The duo worked with Valentino for several years and even had their mother, Kathy, with them for campaigns.

The look: Nicky wore a white floor-length gown that had shimmering cut-outs to show off her toned chest The sisters recently attended a party thrown by their.