This is why Meghan Markle and Vogue Williams aren't invited to Pippa Middleton's wedding

And it's kind of ridiculous.

Pippa Middleton announced her engagement to multi-millionaire hedge fund manager, James Matthews, last July, with the couple set to wed this May.

With their wedding date fast approaching, royals and celebrity guests are said to be saving the date and Princess Charlotte will undoubtedly be preparing for her royal flower girl duties. There are two people who are probably less thrilled about the upcoming nuptials: Meghan Markle and Vogue Williams.

Last month it was revealed that Meghan Markle would most likely not attend Pippa's wedding this summer, with the bride introducing a pretty strict rule for her special day: no bling no bring.

The ‘no bling, no bring policy’ essentially means that friends can only bring a plus one if they are engaged or married to them, and according to the Daily Mail, Pippa Middleton has imposed this principle on her big day.

As Prince Harry’s long term girlfriend and having just attended Laura Hughes-Young’s wedding in Jamaica with him last month, it would seem obvious that Meghan would be welcome, but apparently the Suits actress might not be eligible to attend due to the rule that has supposedly been enforced.

While the rule was most probably enforced to keep numbers down, ensuring that the wedding remains private and that the couple will know all of the people in attendance, some speculated that Pippa Middleton was purposefully trying to exclude Meghan from her wedding to avoid a media frenzy and ensure that the focus remains on the bride.

It looks like it might not be so personal after all, however, with James Matthews' younger brother, former Made in Chelsea star Spencer Matthews, also told he was unable to bring his model girlfriend Vogue Williams due to the rule.

'Pippa’s view is that it wouldn’t be appropriate for her to be there after a few months of dating,' a source told The Sun. 'But some are shocked because her future brother-in-law will end up attending on his own.'

Well that’s a new one. We’ve heard of a no photo policy – an understandable decision given the high profile people in attendance, and we’re all aware of the no child policy – a divisive but common rule to ensure a quiet ceremony, but banning boyfriends and girlfriends seems a little extreme.

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Here’s hoping Meghan Markle and Prince Harry and Vogue Williams and Spencer Matthews will be exceptions.