When the world’s most famous bridesmaid walks down the aisle in May next year, her royal sister Kate may not be by her side.
Why? Apparently it all comes down to tradition.
You see, tradition states that bridesmaids can only be unmarried ladies "of a marriageable age".
Considering 34-year-old Kate is very much a married woman - complete with two children - that means she's out of the running.
Kate may very well appear in Pippa's - who announced her engagement to hedge-fund manager James Matthews in July - bridal party, but she would have to be named as the "matron of honour" and drop the title of "maid".