Kim has revealed her 30-year-old sibling consumed "a little too much" at the Palace Of Versailles in France, the evening before she tied the knot with rapper Kanye West at Forte di Belvedere in Florence, Italy, and was "so hungover" the next day.
Speaking about her May nuptials on 'Jimmy Kimmel Live!', Kim said: "Khloe drank a little too much the night before and I had to wake her up.
"She was laying down and getting her make-up done while she was sleeping, she was so hungover."
Kim also confirmed the happy couple decided against using traditional name cards for their wedding dinner and instead had their guests' names engraved on the marble tabletops.
Explaining the pair's decision, she said: "Because everyone is engraved in our hearts."
The 'Keeping Up With the Kardashians' star and the 'Bound 2' hitmaker, 37, have 13-month old daughter North West, and Kim admits she has become "obsessed" with changing diapers since becoming a mother - though the little girl doesn't enjoy it as much.
She added: "She does not want to sit to get her diaper changed!"