Princess Diana’s model niece Kitty Spencer looks gorgeous at the royal wedding

There are subtle details paying tribute to Prince Harry’s late mother, Princess Diana, at the royal wedding on Saturday, but her family — including her brother Charles, the Earl of Spencer, and sister Lady Jane Fellowes — will also play important roles at the event.

But it was Lady Kitty Spencer, Diana’s niece, who doesn’t have an official role in the festivities, that really stood out.

The 27-year-old, who’s worked as a model and even starred in a Dolce & Gabbana ad campaign and walked in the Italian brand’s runway show in February, looked stunning in a kelly green dress covered in flowers. She wore orange satin heels and a green fascinator with mesh covering her face and a feather coming out the front. She also had a diamond necklace around her neck.