The couple added that they believe their "obsessed" daughters will respond well to the values of Disney princesses and help teach the children "things like determination, compassion, fearlessness and ambition from strong yet relatable female role models".
The full ad reads:
"I have a slightly unusual request that I'm hoping someone will be able to help me with!
"Myself and my husband are looking for a part-time nanny to care for our twin girls during the week, but we want to hire someone to look after our children whilst in character as a different Disney princess every month, such as Princess Anna, Moana, Rapunzel and Princess Merida.
"Like most five-year-olds, our girls are obsessed with Disney and we feel this would be the best way to communicate some important values.
"We know this isn't a normal request for nannies, however we think it would be a great way to teach our girls about things like determination, compassion, fearlessness and ambition from strong yet relatable female role models like Princess Tiana, Princess Anna, Belle and Cinderella.
"We are looking for someone who can commit to a character and create a really fun atmosphere in our home, but also won't be afraid to be a disciplinarian if the twins are naughty or act out – they can be little terrors at times!
"The right person will have a real creative flare as well as a passion for all things Disney and will be able to share that love of those characters with our girls. The role involves picking the girls up after school, four days a week, arranging a variety of Disney-related activities (arts and crafts, baking, singing, etc.), cooking dinner and potentially putting them to bed if we're late home from work.
"The job is part-time, but the right nanny must be willing to work around our busy schedules. Candidates must be looking for a long-term job, as we want to keep the successful nanny in the girl's lives for the foreseeable future.
"We're able to offer around £40,000 a year for the right candidate and will also be covering the hire of each Disney princess costume. You'll be entitled to 25 days holiday, plus bank holidays, as well as the statutory sick day allocation, however you must be flexible in case of any emergencies.
"Requirements include having a clean driving licence, first aid training and a minimum two years' experience in nannying or a similar role. We think a trial shift would work best, so we can see how you interact with our girls and allow us to formally meet before hiring.
"Again, we know this isn't exactly a normal job offer, but we think it's a great opportunity for someone to get really creative and add a little magic to our girl's lives!
"So, if there are any Disney-mad nannies out there who'd be able to help us out, please get in touch."