Guests at Prince Louis' christening will eat slices of Prince William and Kate Middleton's 7-year-old wedding cake thanks to royal tradition
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Prince William and Kate Middleton will serve a tier of their wedding cake from 2011 at the christening of their third child, Prince Louis, on Monday.

It's custom for members of the British royal family to save cake layers for their future children's christenings. 

Tiers of William and Middleton's wedding cake were served at both Prince George and Prince Charlotte's christenings in 2013 and 2015, respectively.

Guests at Prince Louis' christening can look forward to...


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