Here's everything you need to know about Prince George and Princess Charlotte's nanny, Maria Borallo.
In 2014, Maria, who is in her 40s, was employed by Prince William and Kate Middleton when George was just eight months old, according to Mirror.
Her full name is Maria Teresa Turrion Borrallo and grew up in Palencia in the north-west of Spain.
Follow us on our Twitter account @amomama_usa to learn more.
Maria now lives with the royal family at Kensington Palace. She also travels with them on all royal tours.
Her first public appearance with them was when the Duke and Duchess of Cambridge brought George on their tour of Australia and New Zealand.
Maria can often be seen guarding the children to the Round Pond at Kensington Palace. Her favorite places to visit with George and Charlotte include Hyde Park and Bucklebury Farm Park.
She is a graduate of the prestigious Norland College, which is well known for training the caretakers of the UK's most notable families.
Shortly after Charlotte was born, royal commentator Victoria Murphy told ABC News: "The nannies are taught everything from defensive driving to security issues to how to care for a future king or queen."
"So [Maria] just really knows everything that you could possibly need to know about bringing up a child."
As reported by People, Charlotte is learning Spanish from Maria, and in May 2017, Kate also revealed that George knows the basics of Spanish from his nanny.
In an interview with Telegraph, Sayanna, 9, who spoke with Kate, said: "Her son George can count up to ten in Spanish already."
Maria maintains a sense of normalcy for George and Charlotte. After all, she's the one responsible for that fantastic window moment of George from the Queen's birthday celebrations.
Maria also introduced the Duchess to several Spanish childrenswear labels, including Pepa & Co and M&H.