Photos of Prince Louis, Princess Charlotte shared by their mother

Pictures of Britain’s newest royal, Prince Louis, and his big sister, Princess Charlotte, have been shared by Prince William and Catherine, Duchess of Cambridge.

The two photographs, released early Sunday, were taken by Catherine at Kensington Palace in London, where the family lives.

One, taken April 26, shows Prince Louis at just 3 days old. He’s dressed in white and lies on a white pillow, his eyes open.

LONDON, UNITED KINGDOM – APRIL 26: (NEWS EDITORIAL USE ONLY. NO COMMERCIAL USE) (No use in merchandising, advertising or any other non-editorial use including, for example, calendars, books and supplements). This photograph is provided to you strictly on condition that you will make no charge for the supply, release or publication of it and that these conditions and restrictions will apply (and that you will pass these on) to any organisation to whom you supply it. All other requests for use should be directed to the Press Office at Kensington Palace in writing. In this handout photo provided by the Duke and Duchess of Cambridge, Prince Louis is seen at Kensington Palace in a photo taken by the Duchess of Cambridge on April 26, 2018 in London, United Kingdom. (Photo by HRH Duchess of Cambridge via Getty Images)

The second, showing Charlotte holding Prince Louis and kissing him on his head, was taken May 2 as the princess marked her third birthday. She wears a blue cardigan and has her arm underneath her brother, whose eyes are closed.

“The Duke and Duchess would like to thank members of the public for their kind messages following the birth of Prince Louis, and for Princess Charlotte’s third birthday,” said a statement from Kensington Palace on Twitter.

LONDON, UNITED KINGDOM – MAY 02: (NEWS EDITORIAL USE ONLY. NO COMMERCIAL USE) (No use in merchandising, advertising or any other non-editorial use including, for example, calendars, books and supplements). This photograph is provided to you strictly on condition that you will make no charge for the supply, release or publication of it and that these conditions and restrictions will apply (and that you will pass these on) to any organisation to whom you supply it. All other requests for use should be directed to the Press Office at Kensington Palace in writing. In this handout photo provided by the Duke and Duchess of Cambridge, Princess Charlotte is seen with her brother Prince Louis in a photo taken by the Duchess of Cambridge on Princess Charlotte’s third birthday at Kensington Palace on May 2, 2018 in London, United Kingdom. (Photo by HRH Duchess of Cambridge via Getty Images)

The images are the first of Louis to be released since William and Kate posed with him outside the London hospital where he was born April 23.

The Duke and Duchess of Cambridge have sought to protect their young family’s privacy in order to give them as normal a childhood as possible.

But it’s not the first time that Kate, who studied art history at university, has shared her own family photographs with the world.

Last year, for Charlotte’s second birthday, Kensington Palace tweeted an image of the rosy-cheeked toddler taken by her mother at their residence in Norfolk, in England’s east. The palace also released photos by Catherine ahead of the princess’ first birthday.

In June 2015, Catherine shared the first public images of Prince George with his baby sister, followed by pictures of a 6-month-old Charlotte later that year, all taken herself.

The royal family released pictures taken by Catherine’s father, Michael Middleton, of Prince George in 2013.

The palace has periodically distributed official pictures taken by professional photographers.