The photographs – including one of the newborn being cuddled by his sister – were taken by Kate Middleton.
The Duke and Duchess of Cambridge are very pleased to share two photographs of Princess Charlotte and Prince Louis, taken by The Duchess at Kensington Palace.
This image was taken on 2nd May, on Princess Charlotte’s third Birthday. pic.twitter.com/H5VVgIwRGp
— Kensington Palace (@KensingtonRoyal) May 5, 2018
In one picture, taken three days after he was born, the young prince is seen propped up on a white frilly cushion on a seat and is dressed all in white.
The baby, born on 23 April and fifth in line to the throne, is seen looking away from the camera.
In the second photo, taken a few days later on Princess Charlotte’s third birthday, the youngest royal is seen receiving a kiss on the forehead from his sister as he rests in her arms.
Charlotte was last seen visiting the hospital with her older brother George and father William, and turned to wave at the crowds and photographers as she held her father’s hand.
Four-year-old Prince George does not appear in the latest photographs.
Kensington Palace said the duke and duchess were “very pleased” to share the photographs.
“Their Royal Highnesses would like to thank members of the public for all of the kind messages they have received following the birth of Prince Louis, and for Princess Charlotte’s third birthday,” a spokesperson added.
The duchess’s eye for photography was recognised last year after the Royal Photographic Society gave her a lifetime honorary membership for her “talent and enthusiasm”.
The 36-year-old, a history of art graduate, bucked tradition in 2015 when she took the official photos of Charlotte when she was born.
In those pictures, the princess is seen being cradled by her older brother at Anmer Hall – their home in Norfolk.
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The latest photos mark a busy period for the Royal Family, with Prince Louis’s uncle, Prince Harry, set to marry Meghan Markle later this month.
:: Sky News will broadcast live in Windsor the week before the royal wedding with all the build up to the big day, with exclusive live coverage of the wedding in UHD in a special programme from 9am to 3pm on Sky News and Sky One on Saturday 19 May.