It seems like only yesterday Princess Charlotte was born, but today she's off for her first day of school.
The Duke and Duchess of Cambridge took their four-year-old daughter to her first day at St Thomas’s in Battersea, South London today, along with their son Prince George, who has been a pupil since 2017.
A spokesperson for Kensington Palace had previously confirmed, "Princess Charlotte, accompanied by The Duke and Duchess of Cambridge and Prince George, will attend her first day of school at Thomas's Battersea on Thursday 5th September."
Charlotte has been attending Willcocks Nursery in Kensington since January 2018, but will be moving to Reception. Prince George, six, will be joining Year Two alongside his friends and classmates at St Thomas's, which has been rated 'Outstanding' by Ofsted.
Headmaster at Thomas's Battersea, Simon O'Malley, said they were 'delighted' to welcome Charlotte to school.
Earlier this year, he said, 'We are delighted that the Duke and Duchess of Cambridge have decided that Princess Charlotte will join her elder brother, Prince George, at Thomas's Battersea. We greatly look forward to welcoming her and all of our new pupils to the school in September.'
Kate Middleton missed out on her son's first day at St Thomas's due to acute morning sickness – also known as hyperemesis gravidarum – as she was pregnant with Prince Louis at the time, so it's sure to be a momentous occasion for the Duchess.
A spokesperson said at the time, 'Unfortunately the Duchess of Cambridge remains unwell, and will not be able to accompany Prince George on his first day of school.
'The Duke of Cambridge will drop off Prince George this morning as planned.'
She was also forced to pull out of numerous engagements due to her illness, which she also suffered during her two other pregnancies.
This is how Princess Charlotte's first day compares to the other Royals on their first day of school
Royal Family on Their First Day of School
1 of 202019: Princess Charlotte's first day of school
Princess Charlotte's first day at Thomas's Battersea in South London saw her join big brother George at the prestigious school, which famously values kindness as much as academic success. She arrived with her parents, the Duchess and Duke of Cambridge, who said she was 'very excited'.
2 of 20Princess Charlotte, 2018
Princess Charlotte shouldn't be nervous about her big first day coming up — back in January 2018 she proved she was a natural at the first day of school photograph by posing before starting at Willocks Nursery School in London.
3 of 20Prince George, 2017
Prince George arrived for his first day of school at Thomas's school in Battersea in September 2017 with dad Prince William by his side. Now he's starting his third year at the school, he'll surely be able to show his sister Princess Charlotte the ropes.
4 of 202016: Prince George starts nursery
This adorable shot taken by the Duchess of Cambridge in January 2016 shows a sweet Prince George before his first day at Westacre Montessori School Nursery in Norfolk, near Anmer Hall, the country home of The Duke and Duchess of Cambridge and their family.
5 of 20Princess Eugenie, 2009
Princess Eugenie is seen arriving at Newcastle University in September 2009 to begin her studies in English and History of Art.
6 of 20Princess Beatrice, 2008
In September 2008, Princess Beatrice arrived at Goldsmiths, University of London where she read History and History of Ideas.
7 of 20Princess Eugenie, 2001
Prince Andrew, Duke Of York, and Sarah Ferguson, Duchess Of York, take their daughter, Princess Eugenie, to her first day of school at St Georges, Windsor in September 2001.
8 of 20Prince William, 2001
A casually-dressed teenage Prince William strolls around St Andrews University in Scotland with his father, Prince Charles, on his first day at the university in September 2001.
9 of 20Princess Beatrice, 2000
Princess Beatrice poses with both her parents outside St George's School in Ascot, England before her first day in September 2000.
10 of 20Prince Harry, 1998
Prince Harry begins his time at Eton College in September 1998.
11 of 20Prince William, 1995
Prince William, along with his mother Princess Diana, his brother Prince Harry, and his father Prince Charles, poses for a photo outside Eton College before his first day in September 1995.
12 of 20Princess Eugenie, 1994
Princess Eugenie starts her first day at Upton House School in September 1994 with a big smile and sister, Princess Beatrice, by her side.
13 of 20Princess Beatrice, 1991
Princess Beatrice arrives for her first day at Upton House Nursery School in September 1991 hand-in-hand with mum Sarah Ferguson.
14 of 20Prince Harry, 1989
Princess Diana accompanies her sons, Prince William and Prince Harry, to Wetherby School in September 1989. It is Prince Harry's first day at the school.
15 of 20Prince Harry, 1987
Prince Harry is photographed before starting at Mrs. Mynors's Nursery School in London in September 1987 with his parents, Prince Charles and Princess Diana, and his elder brother, Prince William.
16 of 20Prince William, 1987
Prince William is seen on his first day at Wetherby School in January 1987. How cute is his hat?
17 of 20Prince William, 1985
An adorable Prince William — wearing an almost identical outfit to Princess Charlotte on her first day of nursery!— leaves after his first day at nursery in Notting Hill, London in September 1985.
18 of 20Prince Edward, 1972
The Queen and her sons, Prince Andrew (behind) and Prince Edward are pictured outside Heatherdown Preparatory School in September 1972 on Prince Edward's first day at the school.
19 of 20Princess Anne, 1963
Princess Anne, centre, is shown with other pupils during her first term at Benenden School in Kent in September 1963.
20 of 20Prince Charles, 1962
Prince Charles shakes hands with Robert Chew, headmaster at Gordonstoun School, on his first day in May 1962. He is accompanied by his father, Prince Philip, who was also a pupil at the school.