Will, Kate and baby George go Down Under

Catherine, Duchess of Cambridge looks on as Prince William, Duke of Cambridge is shown how to play on DJ decks at the youth community center, The Northern Sound System in Elizabeth near Adelaide, April 23, 2014.

Britain's Prince William and his wife Kate are undertaking a 19-day official visit to New Zealand and Australia with their son George.

Adelaide

Britain's Prince William, Duke of Cambridge, sprays paint to help create a piece of street art at The Northern Sound System, in Elizabeth near Adelaide, Australia, April 23, 2014.

Uluru

Catherine, the Duchess of Cambridge receives a necklace from an Aboriginal elder during a visit to Uluru-Kata Tjuta Cultural Centre at Uluru in the Northern Territory of Australia, April 22, 2014.

Ayers Rock

Britain's Prince William and his wife Catherine, Duchess of Cambridge, pose in front of the Uluru, also known as Ayers Rock, April 22, 2014.

Uluru

Britain's Catherine, Duchess of Cambridge, (C) talks with Aboriginal women during a visit to a local cultural center at Uluru, April 22, 2014.

Adelaide

Prince William, Duke of Cambridge, looks on as Catherine, Duchess of Cambridge is shown how to play on DJ decks at the youth community center, The Northern Sound System in Elizabeth, near Adelaide, April 23, 2014.

Canberra

Catherine, Duchess of Cambridge, and her husband, Britain's Prince William, meet with a disabled boy during a visit to the National Arboretum in Canberra, April 24, 2014.

Sydney

Britain's Prince William and his wife Catherine, the Duchess of Cambridge, are pictured in front of the Sydney Harbour Bridge during a reception at the Sydney Opera House, April 16, 2014.

Sydney

Britain's Prince William (L) carries his son Prince George as he arrives with his wife Kate (R), the Duchess of Cambridge, at Sydney airport, April 16, 2014.

Sydney

Britain's Prince William and his wife Kate, the Duchess of Cambridge, laugh as their son Prince George shakes the hand of Lynne Cosgrove, wife of the Governor-General of Australia Peter Cosgrove, after arriving in Sydney, April 16, 2014.

Sydney

Britain's Prince William and his wife Kate, Duchess of Cambridge, hold cricket bats presented to them as they stand near the Cricket World Cup trophy during a reception at the Sydney Opera House, April 16, 2014.

Sydney

Britain's Prince William greets a well-wisher following a reception at the Sydney Opera House, April 16, 2014.

Sydney

Britain's Prince William and his wife Kate, Duchess of Cambridge, walk during a reception at the Sydney Opera House, April 16, 2014.

Sydney

Britain's Prince William (2nd R) and his wife Kate (3rd R), Duchess of Cambridge, watch an Aboriginal welcome performance during a reception at the Sydney Opera House, April 16, 2014.

Katoomba

Britain's Prince William and his wife Kate, the Duchess of Cambridge, pose for pictures during their visit to the "Three Sisters" rock formation (background) in the Blue Mountains town of Katoomba, west of Sydney, April 17, 2014.

Katoomba

Britain's Prince William and his wife Kate, the Duchess of Cambridge, are pictured during their visit to the "Three Sisters" rock formation (background) in the Blue Mountains town of Katoomba, west of Sydney, April 17, 2014.

Katoomba

Britain's Prince William (3rd R) and his wife Kate, the Duchess of Cambridge (2nd R), visit the "Three Sisters" rock formation in the Blue Mountains town of Katoomba, west of Sydney, April 17, 2014.

Winmalee

Britain's Prince William, meets firefighters during a visit to the Blue Mountains suburb of Winmalee, that lost homes during bushfires last year, with his wife Catherine, the Duchess of Cambridge, west of Sydney, April 17, 2014.

Katoomba

Britain's Prince William (C) looks over the edge of a cliff as he and his wife Kate, the Duchess of Cambridge, visit the Narrow Neck Lookout and observe abseiling by the Mountain Youth Services group in the Blue Mountains town of Katoomba, west of Sydney, April 17, 2014.

Katoomba

Britain's Prince William and his wife Kate, the Duchess of Cambridge, receive gifts from Aboriginal elders (R-L) Chris Tobin, Aunty Sharon Brown, and Aunty Sharon Halls, during a tour of Echo Point in the Blue Mountains town of Katoomba, west of Sydney, April 17, 2014.

Katoomba

Britain's Prince William looks over the edge of a cliff and observes abseiling by the Mountain Youth Services group near his wife Kate (L), the Duchess of Cambridge, as they visit Narrow Neck Lookout in the Blue Mountains town of Katoomba, west of Sydney, April 17, 2014.

Katoomba

Kate, the Duchess of Cambridge, reacts as she meets with members of the crowd during a tour of Echo Point with her husband Britain's Prince William, in the Blue Mountains town of Katoomba, west of Sydney, April 17, 2014.

Winmalee

Kate, Duchess of Cambridge - April 17, 2014 — Phil Noble/Reuters

Kate, Duchess of Cambridge, smiles as she arrives at the Blue Mountains suburb of Winmalee, that lost homes during bushfires last year, during a visit with her husband, Britain's Prince William (not pictured), west of Sydney, April 17, 2014.

Sydney

Britain's Catherine (2nd R), Duchess of Cambridge, strokes Fred the ram as her husband Prince William (R) looks on at the Royal Easter Show in Sydney, April 18, 2014.

Sydney

Catherine, Britain's Duchess of Cambridge, runs across Manly beach in Sydney, April 18, 2014.

Sydney

Catherine, Britain's Duchess of Cambridge, meets with junior surf lifesavers during her visit to a surf lifesaving demonstration at Sydney's Manly beach, April 18, 2014.

Sydney

Catherine, the Duchess of Cambridge, meets with junior surf lifesavers during her visit to a surf lifesaving demonstration at Sydney's Manly beach, April 18, 2014.

Sydney

Catherine (2nd L), the Duchess of Cambridge, and her husband Britain's Prince William (L) pose for a photograph with Australian Prime Minister Tony Abbott (R) and Manly Lord Mayor Jean Hay standing next to a surfboard that the local council presented as a gift for the royal couple's son, Prince George, during a visit to Sydney's Manly beach, April 18, 2014.

Sydney

Catherine, Britain's Duchess of Cambridge, sings with young patients at Bear Cottage, at children's hospice, in Sydney, April 18, 2014.

Brisbane

Catherine, the Duchess of Cambridge (C), climbs into the cockpit of a RAAF Super Hornet of 1 Squadron assisted by Chief of Air Force, Air Marshall Geoff Brown (R) and Commanding Officer of Number 1 Squadron, Wing Commander Stephen Chappell (R), at RAAF Base Amberley, near Brisbane, April 19, 2014.

Sydney

Britain's Prince William (L) signs the First Fleet Bible and Prayer Book as his wife Catherine, Duchess of Cambridge, (C) and Archbishop of Sydney Glenn Davies watch on following an Easter Sunday Service at St. Andrews Cathedral in Sydney, April 20, 2014.

Sydney

Britain's Catherine, Duchess of Cambridge, and her husband Prince William watch as their son Prince George looks at an Australian animal called a Bilby, which has been named after the young prince, during a visit to Sydney's Taronga Zoo, April 20, 2014.

Sydney

Britain's Prince William and his wife Catherine, Duchess of Cambridge, react during an animal display on a visit to Taronga Zoo in Sydney, April 20, 2014.

Sydney

Britain's Prince George holds a toy Bilby during a visit to Taronga Zoo in Sydney, Australia, April 20, 2014.