Shamrock Chic! See Kate Middleton's Best St. Patrick's Day Looks Through the Years

Prince William and Kate Middleton rocked their usual looks for the latest St. Patrick's Day celebrations – Kate in green and William in his uniform. The royal mom sported a forest green Alexander McQueen coat that she topped with a matching fascinator. The Duchess kept her hair pulled back and accessorized with a pair of green tourmaline and green amethyst Kiki McDonough earrings.

They toasted with a pint of Guinness!

Kate got in the holiday spirit with a green Catherine Walker coat trimmed with black fur cuffs and a collar and a jaunty green hat. She accessorized for the chilly weather with black gloves, black tights and suede pumps – and added an extra touch of glam with her drop earrings.

Prince Louis was just a month away from his royal arrival, so Kate toasted to the occasion with a glass of water.

After missing the parade in 2016 (William attended alone), Kate looked stylish in a collared green coat from Catherine Walker adorned with the Irish Guards shamrock brooch. Kate completed her look with a matching fascinator.

Celebrations included sipping a pint of Guinness!

The royal mom broke from her tradition of wearing green for the St. Patrick's Day parade. Instead, she opted for a brown coat – also by Catherine Walker – and hat.

The maternity look came weeks before Princess Charlotte was welcomed.

The royal dressed in head-to-toe green for 2014's appearance at the parade in Mons Barracks, Aldershot, selecting a Hobbs London belted trench, Gina Foster hat, Cartier shamrock brooch and green suede pumps.

A black turtleneck and tights under a coat is still a classic element of Kate's wardrobe. For 2013's celebrations, she stayed warm in the combination, complete with a black fascinator.

In a fittingly festive Emilia Wickstead frock and brown headtopper, Kate paid a special St. Patrick's Day visit to the Irish Guards, passing out shamrocks to officers of the guard's 1st Battalion – a tradition started by her husband’s great-grandmother, the Queen Mother.