While the boarding schools of the US may be riddled with scandals, those of the UK take posh to a new level. Eton College is one of the most famous public schools in the world, educating 13-18 year old boys on everything from the classics to how to rock a tuxedo and tails (it's their daily uniform). The hallowed halls of this elite all-boys boarding school has educated not only Pippa's fiancé, but also his future brother-in-law Prince William. In addition to the royal alumni, Eton has also graduated Tom Hiddleston and Eddie Redmayne. Take aways: Pippa can actually look forward to her husband's high school reunion, and rest easy knowing he will never be without a good pair of loafers.