"Awesome!" she reportedly said after meeting the prince. "He was very funny. I was really happy he was funny."
Jon Bon Jovi was also schedule to perform at the reception for over 200 major donors.
Centrepoint is a homeless youth charity that Prince William took on after his mother Princess Diana died in 1997.
Other celebrity guests at the gala included Colin Firth, Benedict Cumberbatch, Michelle Dockery.
Notable deaths of 2014 [PHOTOS]
Soviets call Reagan joke 'dangerous' [ARCHIVE]