The 37-year-old reality star has admitted she partied a little too hard at her half-sister's 21st birthday bash earlier this week, as she was forced to face a major hangover the following morning.
The sickness didn't stop her from hitting the gym to get in her daily workout though, as she took to Instagram on Friday (10.08.18) to tell her fans there's ''no excuses'' for not staying in shape.
She said: ''OK guys, so I am in the gym and I am hungover. And it's an 8:30 workout, which is a little later than my usual but I figured I gotta get it in. There's no excuses, the gym does not care that I was drunk last night or drunk this morning. The gym does not care.
''I feel good about myself when I'm in shape. So I gotta continue and not let anything get in my way.''
Kylie celebrated her birthday in style with her family and 'Keeping Up with the Kardashians' co-stars, including Kris Jenner, Kourtney and Khloe Kardashian, and Kendall Jenner.
Also in attendance was Kourtney's ex-boyfriend and family friend Scott Disick, Kris' partner Corey Gamble, Khloe's best friend Malika Haaq, and Kendall's boyfriend Ben Simmons.
The group enjoyed dinner at Craig's in West Hollywood, before heading off to nearby nightclub Delilah, which had been decked out with floral arrangements and a ball pit set up in the back room.
The party theme continued with the decor and there were ''Kylie F***ing Jenner'' lighters scattered everywhere. Guests could choose their cup colour depending on their relationship status - red for taken, yellow for single and green for it's complicated.
A source said: ''People were having fun choosing and were messing around. All of the girls were drinking together. Everyone was letting lose and having a great time. Even Kim was drinking and everyone was surprised.''
Guests at the party included Chris Brown, Cara Delevingne, Bella Hadid, French Montana and The Weekend. Caitlyn Jenner also made an appearance.
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