Katy Perry and Orlando Bloom are getting in the Christmas spirit by spreading festive holiday cheer. On Monday, the couple — who will be celebrating one year together in January — visited the Children's Hospital Los Angeles dressed up as Mr. and Mrs. Claus for a day of fun with the patients. The duo posed for a handful of sweet photos with kids, and Katy and Orlando even sang a few Christmas songs. One of the patient's parents shared a photo from the visit on Instagram, writing, "Katy Perry and Orlando Bloom came and sang us Christmas carols. It was so beautiful. I'm so very thankful and we got news we get to go home tomorrow." Their heartwarming visit comes less than a month after Katy was honoured with the Audrey Hepburn humanitarian award for her work as UNICEF's goodwill ambassador, an award that Orlando received last year.