Kendall recovered in time to attend the party, where she made a statement arriving in the shortest Redemption avant-garde LBD we've ever seen.
Celebrities have been known to use such drips to cure flu, hangovers and give themselves an 'energy boost' though it's unknown why Kendall was using it in this particular instance.
The young star did admit to having bad anxiety in a recent episode of Keeping Up With The Kardashians, telling her mother Kris Jenner: "There's a lot that happened this past year that's affected my, like, starting with like... Kim's robbery. Then I got robbed, then I had my stalkers. That's why I don't really like going out anymore, that's why I don't tweet, I don't Instagram. Because that gives me anxiety too. I swear it's the craziest thing."
Wishing Kendall all the best in her recovery!