A royally fun time was had by all.

Kate Middleton and Prince William attended a birthday bash thrown by Pippa Middleton for her husband, James Matthews’ 50th birthday.

The Daily Mail reported on Saturday that the British socialite, 42, had neighbors stewing over the noise that was happening in honor of the hedge fund manager. 9

Along with the Prince and Princess of Wales, the party was also said to have Spice Girl Geri Halliwell-Horner , her husband Christian Horner, Matthews’ brother Spencer Matthews and his wife Vogue Williams on the guest list.

According to the outlet, the theme was “racy,” connecting to Matthew’s love of motorsports.

Middleton’s other half is a former British racing driver and a member of the board of the British F1 team, Atlassian Williams Racing.

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