Kate stuns in turquoise gown for a night at the Tusk Conservation Awards with William

It looks like it's parents' night out this evening in London!

On Thursday night, Prince William and Duchess Kate attended the Tusk Conversation Awards at the Banqueting House in London. The parents of three left their brood at home at Kensington Palace for the evening, and could not have looked more glamorous as they stepped out dressed to the absolute nines.

Duchess Kate wore a stunning turquoise gown by one of her favorite designers, Jenny Packham, for the occasion, completing her evening look with a matching teal clutch and silver open-toe heels. People spotted that Kate has actually worn this very dress once before for a gala during the 2012 London Olympics.

Prince William looked dashing at the award ceremony in a traditional tuxedo; the couple both wore red poppy pins in honor of fallen troops.

Tusk is an important charity to William as its "mission is to amplify the impact of progressive conservation initiatives across Africa." In the winter of 2005, the prince become Royal Patron of the charity and has visited Tusk's conservation efforts firsthand in Africa. According to Hello!, "the annual Tusk Conservation Awards celebrate the achievements of extraordinary people, whose work protecting Africa’s natural heritage might otherwise go unnoticed outside their fields."

Scroll through the gallery above to see more of the couple's night out!

See one of Kate's latest outings below: