As they mark 15 years of marriage, the Prince and Princess of Wales have honed a distinctive approach to their public wardrobes. Their style eschews overt matching, instead favouring subtle coordination and complementary tones.

From their engagement announcement to significant state visits, their sartorial choices consistently blend symbolism with diplomatic intent. Here’s a look back at some of their most memorable looks together.

Engagement announcement – November 16, 2010

Prince William and the then Kate Middleton, during a photocall to mark their engagement. (John Stillwell/PA)

The couple’s first major fashion moment came with their engagement announcement at St James’s Palace.

Kate wore a navy silk jersey wrap dress by the Brazilian-born designer, Daniella Issa Helayel, which sold out within hours and is widely credited with launching what became known as the “Kate effect”.…