Paris Hilton has a heart of gold!

The blonde heiress spent the day visiting sick children at Children's Hospital of Los Angeles, and by the looks of it, everyone had a great day.

Princess P, who brought along beau River Viiperi, came in with huge bags full of toys. Hilton spent most of her time in the cancer ward going room to room doing arts and crafts.

A source at the hospital tells X17online exclusively:

    "Paris is such a good sweet person. She comes to visit us often, and when she does, the children light up and come to life when she's around. She is so down to earth and sweet. Lovely girl."

While at the hospital, Paris also donated money to help expand the children's cancer wing. The holidays are in full swing!