Kate, Pippa and Mirka all opt for white dresses for the men’s Wimbledon final

We can see a pattern here...

Yes, with Wimbledon's famously strict rules dictating that players must wear all-white while at the London club, it seems fitting that some of tennis's most high-profile fans followed suit over the weekend.

A post shared by Catherine,Duchess of Cambridge (@elegant_duchess) on Jul 16, 2017 at 8:28am PDT

The Duchess Of Cambridge, Pippa Middleton, and Mirka Federer all opted for white dresses to watch the men's Centre Court final on Sunday; it was a game eventually won in straight-sets by Mirka husband, Roger, when he beat Croatian Marin Cilic.

A post shared by @royally_catherinemiddleton on Jul 16, 2017 at 8:27am PDT

Pippa, 33, wore a really pretty white tiered floral dress which she paired with a green Tory Burch bag and wedges.

A post shared by Pippa Middleton-Matthews (@pippamidleton) on Jul 16, 2017 at 7:37am PDT

Mirka otped for Valentino - wearing the Italian designer's recent cotton-blend lace midi-dress.

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Duchess Catherine, meanwhile, was in the royal box (natch) and stood out in a white, knee-length dress with a meadow floral pattern from the hem to waist.

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At 35, Federer became the oldest man in the open era to lift the Wimbledon trophy.