• Kate Middleton wore a mint-green party dress during her surprise visit to Northern Ireland on Wednesday.
  • The shimmering design is by Missoni, and currently retails for $2,480.
  • The duchess was photographed pouring a fresh glass of beer behind the bar at Empire Music Hall in Belfast.

Kensington Palace typically announces Kate Middleton and Prince William's appearances a few weeks or months ahead of time, but the couple managed to keep their visit to Northern Ireland on Wednesday a total surprise.

After spending some time in a football training session earlier in the day, Middleton glammed it up for a party at the Empire Music Hall in Belfast later in the evening. According to a tweet from Kensington Palace , the party was held to recognize young people making a difference in Northern Ireland.

Jeff J Mitchell/Getty Images
kate middleton mint green dress

The duchess wore a shimmering, pleated party dress by Missoni, which currently retails for $2,480.

She paired the eye-catching, mint-green dress with beige heels, a matching clutch, and her signature wavy tresses.

Samir Hussein/GettyImages
kate middleton northern ireland

Middleton is used to getting the royal treatment, but she proved she isn't too posh to pour her own pint.

Samir Hussein/GettyImages
kate middleton beer

She was pictured stepping behind the bar to serve up a glass of Harp Ice straight from the tap.

Samir Hussein/GettyImages
kate middleton beer bar

The duchess started her eventful day by rewearing a red coatdress by Carolina Herrera, which she paired with black tights and matching booties by L.K. Bennett.

Samir Hussein/Samir Hussein/WireImage
kate middleton

Read more: 39 stunning looks Kate Middleton repeats again and again

She then changed into something more casual to join a football training session at the Irish Football Association. She paired a cable-knit Ralph Lauren sweater with a $90 pair of New Balance sneakers.

Pool/Getty Images
kate middleton sweater soccer

Middleton and William are set to wrap up their short visit to Northern Ireland on Thursday.

NOW WATCH: Kate Middleton opened a shop for charity