And besides their adorable selves, much of the credit goes to host with the most Khloé Kardashian Odom. Not only is Khloé planning Kim's big bachelorette blowout in Vegas this weekend, but she also threw her sister and her fiancé an engagement party at her L.A. home last month.
Despite having only three days to put the shindig together, she managed to make it a total success.
"We decided on a Monday that we were going to have it, and then it took place that Thursday," she wrote on her blog about the bash.
So who made the list for this last-minute soiree?