Royal Nanny Diaries: The Hidden Lives Of Kate Middleton & Prince William's Kids

Britain's Prince George and Princess Charlotte get the royal treatment from a secret super-nanny, RadarOnline.com has learned: a full-time caregiver who takes care of their every whim, including Spanish lessons! Click through the gallery to find out the full story about the woman who rules Kate Middleton and Prince William's children.

The tots' parents, the Duke and Duchess of Cambridge, William and Kate, hired Maria Borrallo in 2014 and little was known about her until RadarOnline.com visited her hometown in Spain to learn all the secrets about the mysterious woman.

Little Prince George and his baby sister Princess Charlotte could speak better Spanish than English, thanks to their full-time caregiver, who has devoted her time to teaching them a second language. RadarOnline.com exclusively learned that Borrallo, 45, has already managed to make the children fluent in her native tongue!

Hairdresser Antonio Robledo, 74, whose salon is just down the street from the Borrallo family home in Valencia, Spain, told RadarOnline.com he sees the royal nanny whenever she returns: "She always comes and pays me a visit, as a kind of 'close knit' relative. She is a very private lady but she says little George and Charlotte are good with their Spanish, better than their English!"

Robledo told RadarOnline.com that the nanny hoped to show the young heirs her hometown. "Maria loves her job and is very proud to work with the royals," he said. "She really wants to bring the little ones here to Spain to see where she grew up."

Robledo told RadarOnline.com he has known Borrallo for decades, having had her family members as clients since he opened his business back in 1992. He gushed that Borrallo was like his own child. "I have no daughter but for me she is like that," he said. "To say in only a word – she is perfect!"

Maria's parents – mom Maria and dad Luis – moved to Palencia when the future nanny was just 10. "Her dad came here for only one year, but he loved the city and decided to stay," Robledo told RadarOnline.com, remembering the former civil servant who has since died of cancer. "Her mother has moved to a smaller house after last summer. She was very good teaching English to kids. She has been doing that for a long time but I think she got finally bored and retired. Mother is very prudent, like all of them, never cause any trouble in the neighborhood. But Dad was a wonderful person."

Becoming the nanny for the royal family was a natural fit for Borrallo, who trained at the prestigious British nanny school Norland College. "You could always think she looks English in her appearance and manners," Robledo told RadarOnline.com. But he said that she was actually quite reserved. "If she got sic got any friend it was one or two. She was really shy."