April 16, 2021 - 11:23 BST Ainhoa Barcelona Kate Middleton's son Prince Louis has been pictured in his first official portrait with the Queen and Prince Philip that has been released to the public While the Queen and her late husband Prince Philip no doubt have dozens of family photos in their personal albums, this week marked a milestone for one of their great-grandchildren in particular – Prince Louis. Buckingham Palace released a very heartwarming photo of the royal couple with seven of their great-grandkids during a summer holiday in Scotland, and it was the first time little Louis has appeared in an official portrait with the Queen and the late Duke. MORE: The Queen's photo with baby Princess Charlotte has fans saying the same thing The photo was taken by Louis' mum, the Duchess of Cambridge , who is a keen photographer and regularly shares her own personal photos with the public for special occasions such as her children's birthdays. Loading the player... WATCH: HELLO! Insider: what will happen at Prince Philip's funeral The royals were pictured posing at the Queen's Scottish holiday home, Balmoral Castle, on a sofa. Her Majesty sweetly carried baby Prince Louis, who will have been around four months old at the time, on her lap. She also matched in tartan with her great-grandson Prince George, who stood next to her. MORE: The sweet detail missing from the Queen's photo with her great-grandchildren MORE: Prince George and Princess Charlotte's photo with the Queen makes history - here's why This is the first time Prince Louis has starred in an official portrait with the Queen Prince William and Kate's daughter Princess Charlotte took centre stage, waving one hand in the air and also holding onto Louis' hand. Prince Philip meanwhile had his arms around Isla Phillips, who was carrying baby Lena Tindall, and Mia Tindall. Savannah Phillips stood behind … [Read more...] about Kate Middleton’s son Prince Louis stars in first official portrait with the Queen and Prince Philip