By Gemma Strong Princess Kate is just like any other mum and she likes to spoil her children when it comes to their birthdays. The future Queen is a very hands-on parent, who loves nothing more than spending quality time with George, Charlotte, and Louis \- be it playing sports together, gardening, cooking or pottery painting. And there is one special tradition she follows to put extra big smiles on their faces when it comes to their birthdays – but it requires her to stay up late. That’s because once her little ones have gone to bed, Kate sets about making them their very own birthday cake. T…
