Kylie Jenner was hospitalized on Tuesday after she hurt herself while jumping around on a trampoline.

The "Keeping Up With The Kardashians" star, 16, was hanging out with her older half-sister Khloe Kardashian when she fell. Her mother Kris Jenner drove her to the hospital.

While waiting to be seen by a doctor, Jenner posted a photo of herself covering her face on Instagram. She wrote, "In the hospital thanks to Khloe Kardashian.

"My mom said, 'Never thought I would take u to the doctor for a trampoline accident at this age.'  This means war Khloe. Ps. It was painful taking this photo."

Meanwhile, Kardashian, 29, shared a photo collage earlier in the day of the pair jumping on the trampoline. One of the images depicted Jenner grabbing her back in pain.

She wrote: "Kylie this is proof you did it to yourself! Sorry not sorry! Just kidding I am sorry my little bug a boo!! Let the war continue!!!!"