(CNN) - The younger sister of Kate Middleton is getting married on Saturday. Pippa Middleton, 33, will marry 41-year old financier James Matthews.
The ceremony will take place at Saint Mark's Church in Englefield, Berkshire. The two started dating in 2012 but only for a few months. Then they got together for good in 2015.
The Duchess of Cambridge, Prince William, their children, Prince George and Princess Charlotte will be there. Charlotte is going to be a flower girl and George will be a page boy.
Also attending is Prince Harry and his girlfriend, actress Meghan Markle. The details of Middleton's wedding dress have not been revealed.
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