Kate Middleton and her husband Prince William attended the inauguration of the much-awaited Earthshot Prize awards. 

https://twitter.com/KensingtonRoyal/status/1450796943169499140  

Prince William and Kate attended the green carpet in black and white contrast outfits.

On Wednesday, the royal couple's office released rare photos from the night.

In one of them, Kate and William were spotted walking hand-in-hand.

In another, Kate was seen supportively put her arm around husband's lower back.