Princess Beatrice is no stranger to formal occasions, and over the years she's treated us to some very memorable looks [1], especially when it comes to hats and fascinators [2]. The Philip Treacy creation she wore to Prince William and Kate Middleton's 2011 wedding [3] became an instant talking point, and eventually sold in a charity auction for over $100,000. For Prince Harry's wedding to Meghan Markle [4], Bea opted for a slightly more subtle headpiece, choosing a teal Stephen Jones design that sat close to the crown, hugging her auburn hair. This time around, all the detail was in her dress, a ballet-length custom design by Roksanda Ilincic with sheer sleeves and hundreds of beads decorating its full skirt. She made a serious statement as she arrived at St George's Chapel in Windsor with her father Prince Andrew and sister Princess Eugenie. Take a look for yourself ahead.