Kate Middleton bartends in $2,400 Missoni dress during trip to Northern Ireland

Kate Middleton‘s latest outfit is more disco than duchess.

The 37-year-old-royal, who’s on a surprise two-day trip to Northern Ireland with Prince William, headed to an event at Belfast’s Empire Music Hall wearing a green Missoni dress ($2,480) featuring metallic lamé, a pleated skirt and long sleeves.

Middleton paired her mint-hued midi with taupe suede pumps, a matching nude clutch and casual curls, while Prince William opted for a suit sans tie.

Inside the venue, Middleton and Prince William took turns pulling pints of beer.

Inside the venue, Middleton and Prince William took turns pulling pints of beer. (Samir Hussein/AFP/Getty Images)

The sparkling outfit was a playful change from the Duchess of Cambridge’s daytime look; earlier, she wore workout gear and sneakers under a red Carolina Herrera coat dress to play outside with local children.

The party-ready dress was a fitting choice for the evening’s activity; inside the venue, Middleton and Prince William took turns pulling pints of beer.

This article originally appeared in The New York Post.