Lauren Sanchez is set to marry one of the world's billionaires as she will walk up the aisle to Amazon entrepreneur Jeff Bezos, but first she will go up into space alongside Katy Perry and Gayle King

The billionaire couple already have their wedding plans set, one of the most anticipated by the tabloids. Jeff Bezos (61) and his fiancée, Lauren Sanchez (55), have set a wedding date and location two years after getting engaged: it will be in the summer,

Princess Diana and King Charles married in a lavish 1981 ceremony which was watched by over 750 million people around the world. Dubbed the "wedding of the century", Charles and Diana's union reportedly cost $48 million, or $168 million when adjusted for inflation today.