The Royal Babysitters by Clementine Beauvais
Bloomsbury ISBN 9781408850770
When Holly and Anna read about an intergalactic holiday of a lifetime they absolutely have to go on, they decide they will have to get a job to pay for it. They soon talk themselves into being royal babysitters for a day but they are in for a shock when they realise there are six princes to be looked after - and an invasion to repel. Will the girls be able to survive the dangers and problems hurled at them during this crazy day of princesitting? Here is a madcap adventure to delight both boys and girls. The story is complemented throughout with fantastic illustrations.