And indeed pink and white was the theme of the party - held May 12. Us Weekly has shared some pictures of the happy day, which included all of the Kardashian family and their friends.
The party featured a Burt's Bees beauty bar and Dolly's Premium Cotton Candy (which seemed to go over well with adorable 2-year-old Mason.)
Kourtney showed off her baby bump in a very pretty lacy Diane von Furstenberg dress, and mingled with guests, including her sister Kim's new beau - Kanye West.
"It was perfect," the second time mom-to-be tells Us Magazine of her special day.