Sienna Miller wearing a blue and white linen pinstripe suit

Sienna Miller is sticking to her key Wimbledon style rule

The actress sat in the centre court audience with her partner Oli Green on Sunday

Fashion and Lifestyle Writer

July 10, 2023Jul 10, 2023, 11:42 AM GMT+1

Whenever Sienna Miller steps out, we know a lesson in effortlessly chic dressing is imminent.

Suffice to say we were well and truly schooled when she attended Wimbledon 2023 on Sunday with her partner, A Good Person actor Oli Green. Not only did she wear a suit that epitomised tennis-cool, she paired with stunning yet totally unexpected shoes.

MORE: Wimbledon x Ralph Lauren: Everything you need to see from the 2023 collection

Sienna wore the chicest Ralph Lauren suit

The 41-year-old sat in the star-studded crowd amongst the likes of fellow fashionistas Alexa Chung and Lila Moss, wearing a blue and white pinstripe linen suit from Ralph Lauren, who have been the events official outfitter for the last 18 years. The relaxed silhouette featured wide-leg trousers, and a loose fitting blazer with a fabric waist belt to give the look a flattering shape.

Sienna Miller and Oli Green , wearing Ralph Lauren, attends the Polo Ralph Lauren & British Vogue event during The Championships, Wimbledon at All England Lawn Tennis and Croquet Club on July 09, 2023 in Wimbledon, England. (Photo by Darren Gerrish/WireIm — Sienna with her partner Oli Green

Sienna's signature style and the American label are a match made in heaven - put together and preppy, yet still impeccably cool. Her choice of shoe for the event therefore was a total surprise. The Anatomy of a Scandal star paired her look with the chunkiest pair of patent black wedge platforms, juxtaposing 2023's cult-adored minimalistic shoe trends. She paired the look with a navy and tan basket bag and classic sunglasses (and a siren red manicure).

MORE: Wimbledon Style: The best dressed guests at Wimbledon 2023

READ: Wimbledon Fashion: The best celebrity guest outfits of all time

Her platform shoes were totally unexpected

Striped suits are part of Sienna's Wimbledon uniform. In 2021, she attended Ralph Lauren's annual lunch with British Vogue wearing silk striped ensemble from the label, paired with rounded sunglasses and a top-handled cream bag. She took cues from Meghan Markle with the look, who wore the same shirt at Wimbledon in 2018.

Sienna Miller attends Wimbledon Championships Tennis Tournament Day 7 at All England Lawn Tennis and Croquet Club on July 05, 2021 in London, England. (Photo by Neil Mockford/GC Images) — Sienna also wore stripes in 2021

Alongside tantalising tennis fashion, we also turn to Sienna for festival inspo. The Glastonbury style veteran gave Y2K's beloved double denim a contemporary feel at this year's event, opting for denim separates by British label Self-Portrait. She wore high-rise shorts and a cropped jacket with embellished buttons and paired with the coolest ecru cowboy boots from Isabel Marant.

Sienna Miller attends day five of Glastonbury wearing double denim and white cowboy boots — Sienna at Glastonbury 2023

If dressing like Sienna, aka the OG It-girl, is something you aspire to, matching separates are an absolute must.

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