20 iconic photos of Kate Middleton and Prince William

Kate william prince georgeChris Jackson / Getty ImagesThe Duchess and Duke of Cambridge with Prince George at a zoo in Australia.

Today marks Prince William and Kate Middleton’s fourth anniversary.

After four years together, the couple have adopted a dog, moved into their own home at Kensington Palace, and have welcomed their first child, Prince George.

Now, they’re expecting their second child any day.

Though the couple shine at red carpet galas, fundraisers and tours, some of the best moments between the two are candid shots of them laughing and smiling.

Relive some of the couple’s most best moments.

April 29 2011: Kate and William kiss on their wedding day.

May 24, 2011: The royals meet the Obamas at Buckingham Palace before attending a special lunch hosted by Queen Elizabeth.

(Source: People)

July 7, 2011: Kate and William show off matching cowboy get up while visiting Canada during their first joint overseas tour.

July 9, 2011: They wowed Hollywood as they arrived for the BAFTA Brits to Watch dinner in Los Angeles.

December 2011: Prince William brushes the dust off his shoulder during a reception at Centrepoint's Camberwell Foyer in London.

August 2012: Kate and William do the wave at the London 2012 Paralympic Games.

... and were all smiles during an embrace at the London 2012 Olympics after the Men's sprint track cycling team won the gold for Great Britain.

September 2012: Kate laughs as William dances in a hula skirt with the women of the Vaiku Falekaupule.

October 8 2012: The couple share a laugh before meeting the recipients of the Middle Temple Scholarships in London.

December 2012: The two step out after the palace confirms Middleton is pregnant.

(Source: BBC)

March 2013: Prince William being a gentlemen as Kate pulls her heel free from a grate.

April 4, 2013: Kate may have been about six months pregnant, but that didn't stop her from playing table tennis in Scotland with her husband.

April 26, 2013: The pair later dueled wands on the 'Harry Potter' set in London ...

... and Prince William cracked the Duchess up as he took a turn as 'The Dark Knight' on Batman's Batpod.

July 23, 2013: Kate and William leave the hospital with their son, Prince George.

August 19, 2013: The first official photo of the royal family.

April 20, 2014: Prince George meets a Bilby named George at the Taronga Zoo in Sydney, Australia.

April 23, 2014: Prince William and Kate learn how to DJ during a tour in Australia.

April 25, 2014: The Duke and Duchess of Cambridge wave to the crowd with Prince William in Australia.

December 8, 2014: William and Kate hang with LeBron James at a Cavaliers game at the Barclays Center.

In the U.S., celebrities are basically royalty.

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