For her first trip down the red carpet, the Oscar-nominated singer-songwriter donned a royal purple outfit that was inspired ... also in an appropriate Prince-inspired hue, matching Giuseppi ...

but as a guest to Prince Harry and Meghan Markle's son Archie's christening, Kate chose a rose pink shade instead and left white to mum Meghan. Princess Kate chose a rose pink outfit for Archie ...

Prince Louis wore the same white and blue outfit that his uncle Prince Harry wore to the event back in 1986 Maria Pasquini is the staff editor for human interest’s digital vertical at PEOPLE.