The event is held annually to raise money for the Royal Variety Charity, supporting people in the entertainment industry.
Catherine walked the carpet in a green velvet dress with an off-the-shoulder neckline. The British prince was dressed in a black tuxedo.
Paddington performs
The presentation was provided by comedian Jason Manford. Including Jessie J, Laufey, the cast of Les misérables and Paddington the musical took the stage for musical performances.
The gala is traditionally attended every year by members of the royal family. William and Catherine attended the event for the sixth time.