Sienna Miller, 42, Sports Chic Leggings and Tank Top with 27-Year-Old Boyfriend

From chic polka-dot dresses at sports events to ethereal white bohemian gowns on the red carpet, Sienna Miller has been on an epic style streak lately.

Fresh July 17th paparazzi snapshots (obtained by The Daily Mail) reveal the “Horizon: An American Saga” actress, 42, clad in a white tank top and black leggings while casually spending time in London with her boyfriend, Oli Green.

These images seemingly confirm to many fans that she exudes the same effortless style in her relaxed attire as she does in her glamorous, high-fashion appearances.

Last week, Miller and fellow actor Green, 27, were photographed while on a walk in Notting Hill. Miller donned a white tank top with a black scalloped piece underneath it, along with black leggings, white socks, and gray sandals.

The “Factory Girl” alum wore her signature blonde tresses down, parted in the center, and styled into effortless loose waves. She accessorized with black shades. As for her boyfriend, Green sported a breezy long-sleeved white top, blue Adidas track pants, sandals, and a bandana.

This outing from the couple comes after their stylish Wimbledon appearance earlier this month. The “Anatomy of a Scandal” star stepped out in a cream-colored, polka-dot, long-sleeved crop top paired with a coordinating pleated midi skirt. Her look was flawlessly completed with matching Prada accessories. Green donned a crisp gray suit.

Miller and Green were first romantically linked in late 2021. The two share one daughter whose name is yet to be revealed to the public, born in December 2023. Miller is also mom to daughter Marlowe, 11, whom she shares with her ex Tom Sturridge.

Another fashionable moment from Miller came last month when she dazzled at the premiere of her latest Western film, “Horizon: An American Epic: Chapter 1,” where she stars alongside Kevin Costner (also the film’s director and co-writer).

The Golden Globe-winning actress turned heads in a boho chic spaghetti strap dress adorned with intricate lace and ruffle accents, complemented by a flowing, tiered maxi skirt. To complete her stunning look, Miller wore black leather pointed-toe boots, a striking gold statement necklace, and a collection of layered gold charm bracelets.