Will, Kate, and Harry's Jubilee Lunch in London

Tending to their royal duties, Prince William and Kate Middleton were spotted at a reception in the Waterloo Chamber of Windsor Castle in London, England today (May 18).

The Duke and Duchess of Cambridge were joined by Prince William for Queen Elizabeth II’s Sovereign Monarchs Jubilee lunch, along with monarchs from 26 countries.

And of course, Ms. Middleton was dressed to impress, sporting a $2000 pretty pink coat dress from designer Emilia Wickstead.

As for the menu, all the guests enjoyed a lunch of English asparagus tartlet, Windsor Lamb with braised potatoes and vegetables, and a tomato and basil salad.

Enjoy the photos of Kate Middleton and Prince William joining Prince Harry and Queen Elizabeth II at a reception in the Waterloo Chamber in Windsor, England (May 18).