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Watch: Royal Family delighted by Sussexes' baby news
The Queen has led congratulatory messages to her grandson Prince Harry after the arrival of his and Meghan's second child, a daughter.
The Queen said she was "delighted" to hear of her 11th great-grandchild, who was born on 4 June in Santa Barbara, California, US.
Buckingham Palace released a joint statement from senior royals that said: "The Queen, The Prince of Wales and The Duchess of Cornwall, and The Duke and Duchess of Cambridge have been informed and are delighted with the news of the birth of a daughter for The Duke and Duchess of Sussex."
The formal message was followed up by a post on Instagram that used a picture of Harry and Meghan from their wedding day, three years ago.
Prince Charles and Camilla's team also shared their own message on Instagram, writing: "Congratulations to Harry, Meghan and Archie on the arrival of baby Lilibet Diana.
"Wishing them all well at this time."
They used a snap of Harry and Meghan with Archie in South Africa in September 2019, when they were on their only royal tour as a family.
Prince William and Kate shared a message of congratulations on Instagram, writing: "We are all delighted by the happy news of the arrival of baby Lili.
"Congratulations to Harry, Meghan and Archie."
They used a picture by Surrey-based photographer Misan Harriman, a friend of Meghan's, taken as the couple announced her pregnancy back in February.
However, while the caption used "we" it was not personally signed off by William and Kate, as they sometimes do on messages they have written.
The same picture was used in a message from Princess Eugenie, Harry's cousin, who posted it to her stories with her congratulations.
She said: "Congratulations dear cousins... we couldn't be happier for you all."
The comment was surrounded by love heart emojis.
Princess Eugenie has been close with Harry since their childhood, and was friends with Meghan before the couple started dating in 2016.
Eugenie and her husband Jack Brooksbank are understood to be living at Meghan and Harry's Windsor home Frogmore Cottage with their son August Brooksbank, who was born in February.
Sharing their news, Harry and Meghan wrote on their website: "On June 4th, we were blessed with the arrival of our daughter, Lili. She is more than we could have ever imagined, and we remain grateful for the love and prayers we’ve felt from across the globe. Thank you for your continued kindness and support during this very special time for our family."
Harry and Meghan asked for donations to be made to organisations like Girls Inc, Harvest Home or CAMFED in lieu of sending presents to the family.
Watch: Baby Lilibet joins Prince Harry and Meghan Markle at Madame Tussauds in Sydney