Some claim that when Kate Middleton married Prince William back in 2011, Kate's sister, Pippa Middleton, received more press coverage than the bride.
Obviously, that's an exaggeration, but Pippa did receive a lot of attention that day for reasons that still aren't entirely clear.
We guess it had something to do with Pippa's butt and the fact that it's apparently big by British standards.
We imagine the average Englishman pops his monocle and faints dead away if you show him a picture of Kim Kardashian.
Anyway, for whatever reason, many believe that Pippa stole the show from her royal sister, and now it seems Pippa is doing everything she can to avoid a similar fate on her own wedding day.
Pippa will marry hedge fund manager James Matthews in May, and it was initially reported that her wedding would serve as a venue for the first official appearance of Prince Harry and Meghan Markle.
Now, however, sources close to Pippa say she's instituted a policy to ensure that she won't be upstaged at her own wedding.
Since arguing with the bride-to-be in the weeks leading up to a wedding can result in instant death-by-eye-gouging, Pippa could have simply said she doesn't want to see anyone who's name starts with "M" and ends with "-eghan Markle" at the ceremony.
Instead, she kept up appearances by issuing a broader rule:
Tipsters claim Pippa has announced a strict “no ring, no bring" policy, according to which, no guests will be permitted a plus one unless their married or engaged.
Hilariously, it would also mean that her fiance's brother, Spencer Matthews, would not be permitted to bring his model girlfriend, Vogue Williams.
Apparently, that's just fine by Pippa, as Williams is a somewhat of a celebrity in the UK, thanks to her role on the reality show Made in Chelsea.
So Williams is a potential spotlight-stealer, too, but sources say she's a collateral damage bonus kill for Pippa, who mainly has her sights set on Meghan.
Of course, this whole thing could end up backfiring on Meghan.
There are already rumors that Harry and Meghan are engaged, and even if that's not the case, Harry still has a few weeks left to pop the question.
Imagine the scenario:
Harry shows up with Meghan; Pippa approaches to give her the boot; Meghan flashes a ring, and says something badass like, "Butt out, Pippa."
Ryan Murphy would have a Pips vs. Meg miniseries ready to go the next day.