The Duke and Duchess of Cambridge have sent out 'thank you' cards on behalf of one-year-old Princess Charlotte to those who sent her birthday wishes.
Jess Ilse from Halifax, received one of the cards, which features a portrait of the princess, and posted a photo of it on Twitter.
The photo was taken by the Duchess of Cambridge and released as part of her birthday celebrations on 2 May.
"The lovely thank you card I received today for Princess Charlotte's birthday," Ilse wrote on Twitter.
"I was excited more than anything when I received the card," Ilse told The Huffington Post UK.
"When you see an envelope in your mailbox with 'Royal Air Mail' stamped on it, you do a little happy dance."
Ilse said she had sent Princess Charlotte a birthday card with a little cupcake on the cover.
According to the Daily Mail, the royal couple showed their appreciation to everyone who wrote to Princess Charlotte on her birthday.
Another woman who received the card shared a photo on her Tumblr account which showed the message written inside.
"The Duke and Duchess of Cambridge are most grateful for the very kind message you sent to Princess Charlotte on the occasion of her first birthday," it read.
"It was really thoughtful of you and greatly appreciated."
Princess Charlotte Turns one
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The Duke and Duchess of Cambridge and the newborn Princess of Cambridge as they leave the Lindo Wing of St Mary's Hospital in London. (credit:Anthony Devlin/PA Archive)
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Catherine Duchess of Cambridge leave the Lindo Wing at St. Mary's Hospital in London with their new born baby daughter on May 02, 2015. The Duchess of Cambridge was safely delivered of a daughter at 8:34am this morning weighing 8lbs 3oz. (credit:Anwar Hussein/EMPICS Entertainment)
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The Duke and Duchess of Cambridge and the newborn Princess of Cambridge as they leave the Lindo Wing of St Mary's Hospital in London. PRESS ASSOCIATION Photo. Picture date: Saturday May 2, 2015. See PA story ROYAL Baby. Photo credit should read: Dominic Lipinski/PA Wire (credit:Dominic Lipinski/PA Archive)
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Catherine Duchess of Cambridge and Prince William, Duke of Cambridge leave the Lindo Wing at St. Mary's Hospital in London with their new born baby daughter on May 02, 2015. The Duchess of Cambridge was safely delivered of a daughter at 8:34am this morning weighing 8lbs 3oz. (credit:Anwar Hussein/EMPICS Entertainment)
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Photo released by the Duke and Duchess of Cambridge of Prince George and Princess Charlotte. The photograph was taken by the Duchess in mid-May at Anmer Hall in Norfolk. (credit:Duchess of Cambridge/PA Archive)
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Undated handout photo released by the Duke and Duchess of Cambridge of Prince George and Princess Charlotte. The photograph was taken by the Duchess in mid-May at Anmer Hall in Norfolk. (credit:Duchess of Cambridge/PA Archive)
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Undated handout photo released by the Duke and Duchess of Cambridge of Prince George and Princess Charlotte. The photograph was taken by the Duchess in mid-May at Anmer Hall in Norfolk. (credit:Duchess of Cambridge/PA Archive)
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Undated handout photo released by the Duke and Duchess of Cambridge of Princess Charlotte taken by the Duchess at Anmer Hall in Sandringham earlier this month. (credit:The Duchess of Cambridge/PA Wire)
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The Duke of Edinburgh (left), Queen Elizabeth II the Duchess of Cornwall (third left) and the Duke and Duchess of Cambridge (right) with Prince George and Princess Charlotte at Church of St Mary Magdalene in Sandringham, Norfolk. (credit:Chris Jackson/PA Archive)
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Britain's Princess Charlotte is pushed in a pram by her mother Kate the Duchess of Cambridge as they arrive for Charlotte's Christening at St. Mary Magdalene Church in Sandringham, England, Sunday, July 5, 2015. (AP Photo/Matt Dunham, Pool) (credit:Matt Dunham/AP)
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Britain's Prince William, Kate the Duchess of Cambridge, their son Prince George and daughter Princess Charlotte in a pram arrive for Charlotte's Christening at St. Mary Magdalene Church in Sandringham, England, Sunday, July 5, 2015. (AP Photo/Matt Dunham, Pool) (credit:Matt Dunham/AP)
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Britain's Kate the Duchess of Cambridge carries Princess Charlotte after taking her out of a pram as they arrive for Charlotte's Christening at St. Mary Magdalene Church in Sandringham, England, Sunday, July 5, 2015. (AP Photo/Matt Dunham, Pool) (credit:Matt Dunham/AP)
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The Duke and Duchess of Cambridge with their two children, Prince George and Princess Charlotte, in a photograph taken late October at Kensington Palace in London. (credit:Chris Jelf/PA Wire)
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This official photograph, released by Buckingham Palace on Wednesday April 20, 2016, to mark her 90th birthday, shows Queen Elizabeth II with her five great-grandchildren and her two youngest grandchildren in the Green Drawing Room, part of Windsor Castle's semi-State apartments in Windsor England. The children are: James, Viscount Severn, 8-years-old, left, and Lady Louise, 12-years-old, second left, the children of The Earl and Countess of Wessex; Mia Tindall, holding The Queen's handbag, the two year-old-daughter of Zara and Mike Tindall; Savannah 5-years-old, third right, and Isla Phillips, 3-years-old, right, daughters of The Queen's eldest grandson Peter Phillips and his wife Autumn; Prince George, 2-years-old, second right, and in The Queen's arms and in the tradition of Royal portraiture, the youngest great-grandchild, Princess Charlotte, 11-months-old, children of Prince William and Kate Duchess of Cambridge. (© 2016 Annie Leibovitz via AP) MANDATORY CREDIT (credit:ASSOCIATED PRESS)
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The Duke and Duchess of Cambridge with their children, Princess Charlotte and Princess George, enjoy a short private break skiing in the French Alps. (credit:John Stillwell/PA Wire)
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The Duke of Cambridge cuddles Princess Charlotte, as the Duke, Duchess and their family enjoy a short private break skiing in the French Alps. (credit:John Stillwell/PA Wire)
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The Duke and Duchess of Cambridge with their children, Prince George and Princess Charlotte, during a short private break skiing in the French Alps. (credit:John Stillwell/PA Wire)
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Undated handout photo released by the Duke and Duchess of Cambridge of Princess Charlotte taken by the Duchess at Anmer Hall in Norfolk in April, as the young Princess will celebrate her first birthday on Monday May 2. (credit:HRH The Duchess of Cambridge/PA Wire)
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Undated handout photo released by the Duke and Duchess of Cambridge of Princess Charlotte taken by the Duchess at Anmer Hall in Norfolk in April, as the young Princess will celebrate her first birthday on Monday May 2. (credit:HRH The Duchess of Cambridge/PA Wire)
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Undated handout photo released by the Duke and Duchess of Cambridge of Princess Charlotte taken by the Duchess at Anmer Hall in Norfolk in April, as the young Princess will celebrate her first birthday on Monday May 2. (credit:HRH The Duchess of Cambridge/PA Wire)