For the fifth year in a row, Kaiser Permanente Hospital in Oakland organized the "Pediatric Prom."
Saturday night's event gave patients who were in and out of the hospital this year a chance to experience a prom night.
Some of them missed their prom due to chronic illness or a recently discovered illness, but last night it was all about dancing.
The dresses and food were donated by local businesses in the area.
The patients walked a red carpet and took pictures on a photo booth to remember the night.
This year's theme was titled "around the world" to highlight diversity and inclusivity.