The Middleton family are big Wimbledon fans, and every year at the tennis tournament, the whole clan are seen taking their place at various high-profile matches.
Etiquette dictates that Kate Middleton's parents, Carole and Michael, and her siblings, Pippa and James, should have access to the royal box while watching the play-offs.
This prestigious area is reserved for royals, athletes and celebrities, with ticketholders including Vogue editor Anna Wintour, David Beckham and Andy Murray's wife Kim Sears.
As relatives of heirs to the British throne, Prince George and Princess Charlotte, the Middletons would normally be afforded coveted seats in the VIP arena.
And though they have been allowed into the royal box on previous occasions, last week Carole and Pippa were pictured outside of it - as they took their places alongside normal folk in the stands.
This unusual move prompted speculation as to why they would have been refused entry.
And the answer is - as reported by Hello! magazine - they were late to the match in question.
Stewards at the royal box operate a strict entry policy, which leaves any late-comers stranded (unless, presumably, you're the Queen).
Carole and Pippa didn't seem too worried about the rejection, however, and were snapped applauding and laughing together quite happily.
Naturally, the Dukeand Duchess of Cambridge - who have attended Wimbledon several times this year (above) - don't seem to have encountered the same problem as Kate's mum and sister.
Whether this is because they are simply better time-keepers or more worthy VIPs remains to be seen.
But Carole and Pippa aren't the only ones to have fallen foul of the royal box's stringent code at Wimbledon.
In 2015, F1 champion Lewis Hamilton was turned away from the box during the men's final because he was wearing a flowery shirt - as opposed to a suit and jacket.
His spokesperson put it down to an "unfortunate misunderstanding regarding the dress code at Wimbledon."
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