The gray suit has quickly become the season’s uniform of choice, with style icons from Julia Roberts to Ayo Edebiri giving the timeless piece a modern revival. Now, Princess Catherine, the Princess of Wales, has given the look her own royal refinement.
During her first official visit as Royal Honorary Air Commodore at RAF Coningsby in Lincolnshire, Kate stepped out in a tailored gray plaid suit. The ensemble featured a fitted blazer and straight-leg trousers, styled over a textured gray sweater for a sleek monochrome finish. She cinched the look with a black leather belt and gold buckle, blending practicality with polish.
As always, accessories elevated her outfit: navy suede pumps, her sapphire-and-diamond engagement ring from Prince William (once belonging to Princess Diana), and coordinating sapphire earrings. A golden Royal Flying Corps brooch at her lapel honored her new military role, while her hair—styled in a half-up, half-down look—added softness to the structured tailoring.

The visit also saw the princess meet with personnel and their families, tour the new Typhoon Future Synthetic Training facility, and view one of the aircrafts up close. But while the engagement focused on her new responsibilities, her fashion choice echoed a wider moment: the gray suit’s rise as the ultimate style power move.
From Hollywood to royalty, the message is clear—this fall, the gray suit is the uniform that transcends industries, eras, and even crowns.