Like most parents, the Duke and Duchess of Cambridge are extremely hands-on when it comes to childcare for Prince George, Princess Charlotte and Prince Louis.
But unlike most parents, they are also senior Royals and have a rather busy lifestyle that requires them to travel all over the world, so they're not always available.
The couple relies on their live-in nanny Maria Teresa Turrion Borrallo, who started working for the family when George was just six months old.
She's become an indispensable member of their family, with Kate previously telling friends she is “amazing”, as reported by My London.
Maria, originally from Spain, was trained at the prestigious Norland College, in Bath, where nannies are taught everything from how to care for children to defensive driving.
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She lives with the Cambridges in Kensington Palace and Anmer Hall and is well-prepared to take charge when the royal couple is away.
The prestigious college is widely deemed to be the best in the world, with graduates going on to work for royals and celebrities worldwide.
And they earn their keep with newly qualified nannies earning £42,000 for a non-residential role.
Those with more experience earn up to £120,000 after a few years' experience - plus perks including designer handbags, trips abroad and luxurious living quarters.
Speaking to the Mail, Principal Dr Janet Rose said students have to be 'creative, resilient and practical' - and be capable of keeping their employer's secrets.
The college website states: “Norland offers world-class training to those aspiring to be the very best professional childcare practitioners.”
The college welcomes 100 pupils a year - with an acceptance rate of 50% - and the course costs £15,000, with students instantly recognisable in their 'iconic' Mary Poppins uniforms.
Women wear A-line dresses and white gloves while the men's uniform is a brown tweed jacket and beige chinos.
Brown boater hats worn by girls and the brown tie for boys are inscribed with a gold 'N' for 'Norland'.
Dr Rose said: "Amongst many traits, Norland Nannies need to be loving, kind, honest, creative, practical, responsible, organised and willing to continually learn and improve in order to do the very best for the families and young children with whom they work.
"We aren't looking for in-depth knowledge of babies and young children because we will teach them this. Instead, we're looking for what we can't teach – an absolute commitment to being the person that changes the world through shaping the life of the children they work with."