In honor of his birthday, see Prince George's cutest moments.
Britain's Prince William holds his baby son outside the Lindo Wing of St Mary's Hospital before leaving with Catherine, Duchess of Cambridge, in central London July 23, 2013. Kate gave birth to the couple's first child, who is third in line to the British throne, on Monday afternoon, ending weeks of feverish anticipation about the arrival of the royal baby.
Prince George's first official portrait from Kensington Palace.
Prince William carries his son Prince George as they arrive for his son's christening at St James's Palace in London.
Catherine, the Duchess of Cambridge, holds her son Prince George after disembarking their plane with her husband Britain's Prince William in Wellington.
The Prince and his wife Kate are undertaking a 19-day official visit to New Zealand and Australia with their son George.
Britain's Prince George plays with a toy at a Plunket play group event at Government House in Wellington.
Catherine, Duchess of Cambridge, holds her son Prince George during a Plunket nurse and parents' group event at Government House in Wellington.
Britain's Prince William holds his son Prince George as he and his wife Catherine, the Duchess of Cambridge, depart Wellington on an Australian air force jet.
Britain's Prince William and his wife Catherine, 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.
Catherine, the Duchess of Cambridge, stands beside her husband Britain's Prince William with their son Prince George as they depart Wellington on an Australian air force jet.
Britain's Prince George reacts in his father Prince William's arms after looking at an Australian animal called a Bilby, which has been named after the young prince, during a visit to Sydney's Taronga Zoo.
Britain's Catherine, the Duchess of Cambridge, holds her son Prince George as they prepare to board a plane with her husband Prince William (not pictured) to depart Canberra.
Prince George crawls during a polo match in Gloucestershire, Britain.