Duchess Kate is the picture of elegance in Dolce & Gabbana at her first-ever Royal Ascot appearance

10 Ways William and Kate Have Broken Royal Protocol
10 Ways William and Kate Have Broken Royal Protocol

The Duchess of Cambridge, Kate Middleton, joined her husband Prince William today to attend the Royal Ascot horse race for the first time. As a favor to the Queen during her birthday celebrations -- who loves horses almost as much as her precious corgis! -- Kate and William joined in on the festivities, dressed to the nines.

Also spotted with the royal couple during the somewhat rainy afternoon? Princess Mary and Crown Prince Frederik of Denmark:

Royal Ascot - Duchess Kate and Princess Mary
Royal Ascot - Duchess Kate and Princess Mary

The two royal ladies looked lovely as ever, with Kate wearing the white lace Dolce & Gabbana dress we first saw during the Queen's birthday celebration (it's the Cotton Blend Lace Dress, currently 40% off at Net-a-Porter!) and Princess Mary in a striking red Marc Jacobs frock. Both wore gorgeous, elaborate hats, and seemed to have a blast while watching the races.

Kate paired the pretty lace dress with her pointed nude pumps that she has been favoring lately, the Gianvito Rossi 105 pump in dusty rose suede.

Click through below to see more photos of Kate and Mary at the Royal Ascot races:

More royal family news:
Prince William speaks out against homophobia on gay magazine cover
Kate Middleton, Prince William sign book of condolences for Orlando shooting victims
Princess Charlotte makes her balcony debut at Trooping the Colour

Can't get enough of Kate's style? See how it's changed over the years: