They haven't made a public appearance together for a while, but Prince William and Kate Middleton popped up in the U.K. today for a great cause.
The royal couple attended the opening of Oak Centre for Children and Young People at The Royal Marsden Hospital in Sutton, which William is president of.
His mother, Princess Diana, was president of the Hostpital, the first in the world fully devoted to cancer treatment, from 1989-1997.
Kate looked stylish as ever when she arrived, wearing a cream Amanda Wakely dress and matching pumps.
Check out more photos above.
