1/5
Instagram
Birthday Girl
Kendall gave a glimpse into her celebrations, writing, "thank you for all the birthday love."
2/5
Instagram
Popping Off
Kendall reclined on the couch, with a silver balloon arch wishing her a happy birthday.
3/5
Instagram
Stretch Break
Looks like the model kicked off her day with some yoga and stretching in the backyard.
4/5
Instagram
Tasty Treat
She dug into the festivities with a white frosted cake from Hansen's Cakes with golden candles.
5/5
Instagram
Poolside Pose
The Kardashians star gave a thoughtful glance at the sunset clouds to end her night, as celebs including Lily Aldridge, Zack Bia and Lauren Perez commented sweet messages.