As well as being one of the most popular figures in the British monarchy, the Duchess of Cambridge is also a hands-on and loving mother, eager to give her children the best childhood she can.
However, in a bid to make her children's birthdays even more special, Kate will stay up extra late the night before to carry on her extra special tradition.
Kate will stay up later than usual to ensure she continues the sweet tradition once her little ones Prince George, Princess Charlotte and Prince Louis have gone to bed, Kate will make them their very own birthday cake.