Kourtney Kardashian And Her Kids Attend A Birthday Party

It looks like yesterday was filled with children's birthday parties galore.

Kourtney Kardashian took her kids to a party in Beverly Hills. However, she looked more excited for the occasion than her tots. Weary Mason wiped the sleep from his eyes, clung to his mom's side, and fought for her attention, while baby Penelope yawned.

Kourtney was dressed for the spring heat. She wore a loose white top with belted, over-sized linen pants. The casual look matched Penelope's simple pink and white floral piece, but was drastically different from Mason's getup. The three-year-old must have inherited his dad Scott Disick's eccentric style; he wore a black tank and matching sweats with large white stars.

Kourtney and sister Khloe will make an appearance today at the Huntington Beach Ulta Beauty store to promote their Kardashian Beauty collection.