Princess Charlotte will go by a new name at school

Princess Charlotte is growing up right before our eyes! 

Sept. 5 is set to be a big day for the four-year-old, who will join big brother Prince George for her first day of school! Charlotte will be dropped off at Thomas's Battersea by her parents Prince William and Duchess Kate to kick off a semester of computing, French, art, drama and ballet, in addition to her core studies. 

30 PHOTOS
Princess Charlotte pulls cheeky move at King's Cup
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Princess Charlotte pulls cheeky move at King's Cup
COWES, ENGLAND - AUGUST 08: Princess Charlotte and Catherine, Duchess of Cambridge attend the presentation following the King's Cup Regatta on August 08, 2019 in Cowes, England. (Photo by Samir Hussein/WireImage)
The Duchess of Cambridge with Prince George and Princess Charlotte look through a window at the prize giving after the King's Cup regatta at Cowes on the Isle of Wight. (Photo by Aaron Chown/PA Images via Getty Images)
COWES, ENGLAND - AUGUST 08: Princess Charlotte of Cambridge and Catherine, Duchess of Cambridge having fun together after the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 08: Princess Charlotte of Cambridge and Catherine, Duchess of Cambridge having fun together after the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 08: Princess Charlotte of Cambridge and Catherine, Duchess of Cambridge having fun together after the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 08: Princess Charlotte and Catherine, Duchess of Cambridge attend the presentation following the King's Cup Regatta on August 08, 2019 in Cowes, England. (Photo by Samir Hussein/WireImage)
COWES, ENGLAND - AUGUST 08: Princess Charlotte of Cambridge and Catherine, Duchess of Cambridge having fun together after the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
Britain's Princess Charlotte of Cambridge (L) reacts with her mother, Britain's Catherine, Duchess of Cambridge prior to the presentation ceremony following the eight boat regatta, The King's Cup at Cowes off the south coast of England on August 8, 201 9. - The boats taking part in The Kings Cup will each represent one of the charities that are being supported this year by Their Royal Highnesses. (Photo by Adrian DENNIS / AFP) (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
COWES, ENGLAND - AUGUST 08: Princess Charlotte (C) at The Royal Yacht Squadron during the inaugural Kings Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The Kings Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, Londonís Air Ambulance Charity and Tusk. on August 08, 2019 in Cowes, England. (Photo by Antony Jones/Getty Images)
COWES, ENGLAND - AUGUST 08: Princess Charlotte of Cambridge and Catherine, Duchess of Cambridge having fun together after the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 08: Princess Charlotte attends the King's Cup Regatta on August 08, 2019 in Cowes, England. (Photo by Karwai Tang/WireImage)
COWES, ENGLAND - AUGUST 08: Prince George watches the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 08: Prince George watches the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 08: Michael Middleton and Prince George watch the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 08: Carole Middleton, Michael Middleton and Prince George watch the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 08: Prince George watches the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
The Duchess of Cambridge with Princess Charlotte look through a window at the prize giving after the King's Cup regatta at Cowes on the Isle of Wight. (Photo by Andrew Matthews/PA Images via Getty Images)
COWES, ENGLAND - AUGUST 08: Michael Middleton and Prince George watch the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 08: Prince George attends the King's Cup Regatta on August 08, 2019 in Cowes, England. (Photo by Karwai Tang/WireImage)
COWES, ENGLAND - AUGUST 08: Michael Middleton and Prince George watch the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 09: Prince George watches the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 9, 2019 at Cowes on the Isle of Wight, England. The royal couple are going head to head in the regatta in support of their charitable causes. (Photo by Peter Nicholls - WPA Pool/Getty Images)
COWES, ENGLAND - AUGUST 08: Michael Middleton and Prince George watch the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 08: Prince George watches the inaugural King’s Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The King’s Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, London’s Air Ambulance Charity and Tusk. (Photo by Chris Jackson/Getty Images)
COWES, ENGLAND - AUGUST 08: Princess Charlotte and Catherine, Duchess of Cambridge attend the presentation following the King's Cup Regatta on August 08, 2019 in Cowes, England. (Photo by Samir Hussein/WireImage)
The Duchess of Cambridge with Princess Charlotte and Carole Middleton (left) look through a window at the prize giving after the King's Cup regatta at Cowes on the Isle of Wight. (Photo by Aaron Chown/PA Images via Getty Images)
The Duchess of Cambridge with Prince George and Princess Charlotte look through a window at the prize giving after the King's Cup regatta at Cowes on the Isle of Wight. (Photo by Aaron Chown/PA Images via Getty Images)
The Duchess of Cambridge with Princess Charlotte look through a window at the prize giving after the King's Cup regatta at Cowes on the Isle of Wight. (Photo by Aaron Chown/PA Images via Getty Images)
COWES, ENGLAND - AUGUST 08: Prince George of Cambridge and Princess Charlotte of Cambridge look through a window at the prize giving after the King's Cup regatta on August 8, 2019 in Cowes, England. (Photo by Andrew Matthews - WPA Pool/Getty Images)
COWES, ENGLAND - AUGUST 08: Prince George (L) with Princess Charlotte (C) at The Royal Yacht Squadron during the inaugural Kings Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The Kings Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, Londonís Air Ambulance Charity and Tusk. on August 08, 2019 in Cowes, England. (Photo by Antony Jones/Getty Images)
COWES, ENGLAND - AUGUST 08: Princess Charlotte (C) at The Royal Yacht Squadron during the inaugural Kings Cup regatta hosted by the Duke and Duchess of Cambridge on August 08, 2019 in Cowes, England. Their Royal Highnesses hope that The Kings Cup will become an annual event bringing greater awareness to the wider benefits of sport, whilst also raising support and funds for Action on Addiction, Place2Be, the Anna Freud National Centre for Children and Families, The Royal Foundation, Child Bereavement UK, Centrepoint, Londonís Air Ambulance Charity and Tusk. on August 08, 2019 in Cowes, England. (Photo by Antony Jones/Getty Images)
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The royal tot will also be taking a different name during her time at the $23,000-a-year prep school, dropping her official moniker of Her Royal Highness Princess Charlotte of Cambridge. Instead, she will be known as Charlotte Cambridge to her peers and teachers. Her brother also goes by George Cambridge, but has reportedly assumed the nickname P.G. from his classmates!  

Technically, the royals' last name isn't Cambridge, but Mountbatten-Windsor. Like Charlotte and George, Prince William and Prince Harry dropped their official royal titles and surname when they started school, instead assuming the names of William Wales and Harry Wales after their father, the Prince of Wales. 

Charlotte "can’t wait to be with George at big school!” said a source to People. She is "so excited about it all." 

13 PHOTOS
Prince William walks Prince George to his first day of school
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Prince William walks Prince George to his first day of school
Prince George holds his father Britain's Prince William's hand as he arrives on his first day of school at Thomas's school in Battersea, London, September 7, 2017. REUTERS/Richard Pohle/Pool
Helen Haslem, head of the lower school and Britain's Prince William hold Prince George's hands as he arrives for his first day of school at Thomas's school in Battersea, London, September 7, 2017. REUTERS/Richard Pohle/Pool
Britain's Prince George accompanied by Britain's Prince William (L), Duke of Cambridge arrives for his first day of school at Thomas's school in Battersea, southwest London on September 7, 2017. / AFP PHOTO / POOL / RICHARD POHLE (Photo credit should read RICHARD POHLE/AFP/Getty Images)
Britain's Prince William accompanies his son Prince George on his first day of school at Thomas's school in Battersea, London, September 7, 2017. REUTERS/Richard Pohle/Pool
Helen Haslem, head of the lower school and Britain's Prince William hold Prince George's hands as he arrives for his first day of school at Thomas's school in Battersea, London, September 7, 2017. REUTERS/Richard Pohle/Pool
Prince George holds his father Britain's Prince William's hand as he arrives on his first day of school at Thomas's school in Battersea, London, September 7, 2017. REUTERS/Richard Pohle/Pool
Britain's Prince George (C) accompanied by Britain's Prince William (L), Duke of Cambridge arrives for his first day of school at Thomas's school where he is met by Helen Haslem (R) head of the lower school on September 7, 2017 in southwest London. / AFP PHOTO / POOL / RICHARD POHLE (Photo credit should read RICHARD POHLE/AFP/Getty Images)
Britain's Prince William accompanies his son Prince George on his first day of school at Thomas's school in Battersea, London, September 7, 2017. REUTERS/Richard Pohle/Pool
Britain's Prince William accompanies his son Prince George on his first day of school at Thomas's school in Battersea, London, September 7, 2017. REUTERS/Richard Pohle/Pool
Helen Haslem, head of the lower school and Britain's Prince William hold Prince George's hands as he arrives for his first day of school at Thomas's school in Battersea, London, September 7, 2017. REUTERS/Richard Pohle/Pool
LONDON, ENGLAND - SEPTEMBER 7: A general view of St. Thomas's school in Battersea where Prince George is attending his first day in London, United Kingdom on September 7, 2017. (Photo by Kate Green/Anadolu Agency/Getty Images)
LONDON, ENGLAND - SEPTEMBER 7: A general view of St. Thomas's school in Battersea where Prince George is attending his first day in London, United Kingdom on September 7, 2017. (Photo by Kate Green/Anadolu Agency/Getty Images)
LONDON, ENGLAND - SEPTEMBER 7: A general view of St. Thomas's school in Battersea where Prince George is attending his first day in London, United Kingdom on September 7, 2017. (Photo by Kate Green/Anadolu Agency/Getty Images)
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