Still, that didn't stop the reality star from rocking the same style during her birthday getaway in Mexico with Tyga and some of her other closest pals.
In the exclusive pics obtained by Entertainment Tonight, Ky is holding on tight to Tyga as the two enjoy some water sports together.
Kylie's BFF Pia Mia also joined them for the b-day vacay and Kylie shared this Snapchat of them resting up for some more fun in the sun:
Kylie can't stay in Mexico for too long, as she's hosting another birthday bash at Beachclub in Montreal, Canada on August 16, where she'll legally be able to drink.
As far as we know, that will be the end of Kylie's birthday festivities, but you never know if she's got plans to continue the celebrations after that!
Want More? Like us on Facebook
Gallery | Kylie Jenner and Tyga's Cutest Moments