The model and actress was spotted at the party after she and Jenner posed for a photo together, which was featured on the Israeli's Instagram story.
The deal, which reportedly saw Kardashian paid $6 million, was overseen by Israeli supermodel and former Carolina Lemke shareholder, Bar Refaeli.
Called "solutionwear", the reality TV star wrote on Twitter that her newest line "celebrates and enhances the shape and curves of women."
Kardashian posted the name on her Twitter account on Monday.
The couple now have four children.
Purim Roast: "KKW Beauty is proud to present ‘Gantz Blue’ and ‘Lapid White,'" the new fragrance of the Blue and White Party.
Carolina Lemke says visit by supermodel and reality star will be rescheduled
Kardashian was meant to arrive in Israel to promote the new eye-wear collection by Carolina Lemke.
The collection is available for online purchases as of Tuesday morning.
Supermodel's sunglasses collection for Bar Refaeli-helmed brand begins pre-sale in Israel.