The famous sisters joined the likes of Justin Bieber, Miranda Kerr and Selena Gomez as they stopped by the CR Fashion Book Issue No.5 launch party in the French Capital.
Proving there's nothing better than a sexy black frock, Nicky showcased her svelte silhouette in a figure-hugging number complete with cut-out detailing, a demure high neckline and a below-the-knee hem.
The fashion author paired her sultry dress with towering heels complete with criss-cross laces, adding a jet black manicure while sweeping her blonde locks into a chic updo.
Nicky also made us swoon with her mega-watt engagement ring which sparkled in the light as she posed up a storm for photographers. Jealous!
And Paris looked beyond stunning at the event in a ravishing floor-length gown, which featured a plunging neckline and cut-out details, giving a glimpse of her flat-as-a-pancake midriff.
The DJ also made a statement with her dazzling silver cuff and diamond stud earrings, sweeping her enviably long golden tresses into a high ponytail. Gorgeous!
The stylish sisters have been seriously wowing us with their outfits recently - earlier that day Paris and Nicky stepped out at the Valentino show at Paris Fashion Week, nailing the colour block trend in an adorable pair of vibrant dresses.
We can't wait to see what other fancy frocks they have up their sleeves!
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