Kate’s younger sister will be front and center during Friday’s ceremony. Here are some fun facts about the royal MOH. 
Pippa Middleton at the wedding of the Duke and Duchess of Northumberland's eldest daughter Lady Katie Percy.
(By Scott Heppell/The Associated Press)
Full name: Philippa Charlotte Middleton
Age: 27
Career: Launched The Party Times an online kid’s party-planning magazine for her parents’ company Party Pieces. She also works for the events company Table Talk.
Alma mater: Edinburgh University
Relationship status: Reportedly dating Alex Loudon, former cricket player, who she may bring as her wedding date.
Notoriety: Tatler magazine named her No. 1 “Society Singleton” in 2008.
Future plans: She’s favored to become Kate’s lady-in-waiting, according to The Daily Telegraph .
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* On Friday, catch live blogging of the wedding starting at 4 a.m., and live video beginning at 5 a.m. at washingtonpost.com/royalwedding.