In a sneak peek at Sunday's Keeping Up with the Kardashians season finale, Khloé, 31, and Kourtney Kardashian, 36, catch up the morning after and Khloé explains that, well, her memory from the night before is somewhat lacking.
"That was the best night ever," Kourtney says, explaining that she kept the party going afterwards and hung out with Kim Kardashian West and Kanye West.
"Who came back here with you?" Kourtney asks her sister.
"I was by myself," Khloé replies, explaining that their hairstylist and close family friend Jen Atkin and her husband put Khloé in a car and sent her home.
The sisters and Atkin go on to recap just what sort of shenanigans Khloé was getting up to at the party, while Khloé remains unapologetic: "Listen, Kanye said I was a great emcee, and that's a compliment."
"I definitely don't remember a good 80 percent of my mom's birthday," Khloé admits in a confessional, adding with a wink: "I do know I looked really good in my dress!"
"I needed to blow off some steam," she continued. "And I just don't feel guilty about getting that f---ed up because I deserved every glass of champagne."
VIDEO: Inside Khloé Kardashian's Heartbreak after Lamar Odom's Hospitalization: 'This Is Exactly What She Feared'
Indeed, at the time of Jenner's Nov. 6 birthday bash, Khloé was still very much adjusting to life taking care of her estranged husband Lamar Odom, who was hospitalized after being found unconscious in a Nevada brothel on Oct. 13. The party marked one of the first times Khloé had left Odom's hospital bedside since his near-fatal overdose.
On last week's episode, Khloé admitted she felt "guilty being away from him."
"I am very protective over Lamar right now ... My brain is still at the hospital," she told the camera. "I get super anxious."
The Keeping Up with the Kardashians season finale airs Sunday (9 p.m. ET) on E!