William and Kate's cutest moments this year

• William and Kate sure were busy in 2018, being the Duke and Duchess of Cambridge.
• The couple welcomed their third child, Prince Louis, and visited many charities and military bases.
• Throughout the year, William and Kate were photographed laughing, playing sports, and even engaging in some royal PDA. 

The world was gripped when William and Kate got married in 2011, and since then, all eyes have remained on the Duke and Duchess of Cambridge. With Prince William second in line for the English throne, he and his family are some of the most closely watched royals — and this year, William and Kate shared some heartwarming moments.

The couple welcomed their third child, Prince Louis, and visited military bases and charities around the world. They even engaged in a rare public display of affection at Princess Eugenie's wedding, and the world seemed to fall in love with them all over again.

Keep scrolling for William and Kate's cutest moments in 2018.

This year, William and Kate welcomed their third child: Prince Louis of Cambridge.

William and Kate welcomed their third child this April, and Prince Louis is already capturing hearts worldwide. 

Prince Louis joins siblings Prince George and Princess Charlotte and is fifth in line for the thrown.

The couple shared a rare moment of PDA at Princess Eugenie's wedding.

Fans were delighted when William and Kate showed a bit of their affection in public at Princess Eugenie's wedding this October. The Duchess placed her hand on William's leg, and he responded by placing his hand on top of hers.

The couple usually refrains from engaging in public displays of affection, most likely due to a precedent established by Queen Elizabeth.

As INSIDER previously reported, "Since Queen Elizabeth II is rarely affectionate with Prince Philip in public, the monarch seems to have set 'an unwritten precedent' that discourages PDA — especially during official royal engagements."

Both shared a laugh at the BBC Broadcasting House this November.

The Duke and Duchess visited the BBC Broadcasting House on November 15 in honor of anti-bullying week. They shared a laugh during a panel discussion.