The royal family has been incredibly busy this year [1], but it's also been a pretty monumental year for Kate Middleton. In addition to touring the world with Prince William [2] and attending official royal events, the duchess has also welcomed a new sister-in-law [3], Meghan Markle [4], and her third child, Prince Louis [5]. Plus, she's getting ready to become an aunt for the first time as her sister, Pippa Middleton [6], gets ready to give birth to her first child. While the duchess has been out of the spotlight in recent months for maternity leave, she has had a handful of memorable moments in 2018. See some of her best ahead!

January: Kate got super competitive during a hockey match in Sweden.

January: Kate met up with the Swedish royals.

February: Kate looked absolutely stunning at the BAFTAs.

February: Kate kicked off the first Royal Foundation Forum with Meghan, Harry, and William.

March: Kate attended the Commonwealth Day service.

March: Kate enjoyed the St. Patrick's Day Parade with William.

April: Kate gave birth to Prince Louis.

May: Kate was front and centre for Prince Harry and Meghan Markle's wedding.

June: Kate attended Trooping the Colour with the royal family.

June: Kate cheered on William at a charity polo match.

July: Kate looked like a proud mom at Prince Louis's christening.

July: Kate was all smiles at the RAF Celebration.

July: Kate bonded with Meghan at the Wimbledon Tennis Championships.

July: Kate and Will had the look of love at the Wimbledon Tennis Championships.

October: Kate returned from maternity leave.