The sisters attended a bash to celebrate Matthew Mellon's 50th birthday, thrown by his wife Nicole Hanley Mellon, and they both whipped out their LBDs for the occasion!
Paris wowed in leather, parading her sunkissed pins in a thigh-skimming frock which featured long sleeves.
She also rocked a fierce pair of lattice boots by Jimmy Choo, adding silver bling and sleek, smooth tresses.
Beauty-wise the DJ kept it simple, rocking flawless skin, petal pink lips plus a slick of liquid liner.
Meanwhile, Nicky pulled out all the stops too in a pretty black frock paired with lace-up heels.
The designer toted a leather clutch with silver hardware, styling her blonde locks in tousled waves and sporting immaculate make-up with glossy lips.
The glamorous duo have been spotted together a lot recently, showcasing a whole host of fabulous outfits while hitting the FROWs at New York Fashion Week.
Earlier this week, the Hilton sisters stepped out at the Alice + Olivia autumn/winter '14 presentation, with Paris donning a cute playsuit and Nicky wearing a chic printed dress.
They also attended the Purple Fashion Magazine Dinner, earning their fashion stripes in a pair of lust-worthy skin-tight frocks.
Paris opted for a nude number with black panels by Haus of Milani, while Nicky went for a nautical vibe in a blue and white dress teamed with red heels.
We can't wait to see what they wear next!
What do you think of Paris and Nicky's outfits? Let us know by commenting below as the best comment across the site each week wins £50!
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Paris' year so far in pictures:
Copyright: Jean Catuffe / Contributor