Princess Charlotte Poses With Prince George For School Pic: Inside Her First Day

The 4-year-old daughter of Kate Middleton and Prince William has an exciting year ahead of her.

It’s an exciting time for Princess Charlotte

The 4-year-old royal was dropped off at Thomas’s Battersea school on Thursday by her parents, Kate Middleton and Prince William, and her older brother, Prince George. 

William told her teacher that the little cutie is “very excited” to begin at the London school where her brother has been attending for two years. In honor of her first day, Charlotte posed for an adorable portrait with George. 

Charlotte has a progressive class schedule that will include reading, math, French, music, drama, ballet and even computer class, a royal source tells ET. 

And don’t expect her classmates to call her “princess” or “Her Royal Highness.” At school, Charlotte, whose family calls her “Lottie,” will go by Charlotte Cambridge.

According to royal expert Katie Nicholl, Charlotte was previously known by another nickname: "Warrior Princess." "Apparently she earned that nickname because obviously she is a princess but she is quite a tomboy," Nicholl tells ET. "She loves climbing trees and she's very much an adventurer."

Charlotte will wear the same school uniform as every other student -- there are separate uniforms for winter, spring, sports and ballet, though she has already accessorized her school bag with a pink sequined unicorn keychain. 

ET has learned that she’s already taking pony lessons and likes playing with her dolls and running around with big brother George kicking the soccer ball and even playing croquet together. The source says Charlotte is “excited to join her brother at big school.” 

Both William and Kate are very hands-on parents, following in the footsteps of the late Princess Diana in wanting to make sure their children “have as an normal upbringing as possible,” despite their royal pedigree, the source adds. 

"One of the reasons they've chosen [this] school is because it is very, very normal and they're getting a very ordinary education -- albeit a very privileged education -- but they're treated like any other child," Nicholl says. "There's no special treatment for George, there won't be any special treatment for Charlotte either."

ET's source explains that Kate often does the school run herself and both parents regularly drop off and pick up their children and are very much a part of the school community despite their royal obligations. The Duchess of Cambridge places great emphasis on motherhood and providing a stable, loving environment for her children, the source says. 

With two children in school, William and Kate save about $460 a year off the over $23,000 per child tuition fee. That money goes to to their education, of course, as well as a fancy lunch, including calamari, risotto and shrimp curry. "The children are encouraged to develop an adult palate and some of the menu choices are what some might consider are certainly for children, quite sophisticated," Nicholl dishes. 

"The queen has joked that at home, even at Buckingham Palace, Charlotte rules the roost. And I think that very much is the feeling amongst the Cambridges," she continued. "Prince George may be the eldest child, but I think it's Charlotte who calls the shots and has everyone running rings around her."

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