Sienna Miller, 40, flashes her abs in a green crop top

Their romance is going strong after they first got out together in February.

And Sienna Miller, 40, left New York for a romantic walk with her beau Oli Green, 25, on Friday.

The actress showed off her abs in a green crop top and black high-waisted jeans for the low-key getaway as she wrapped her arms around her handsome boyfriend.

Love: Sienna Miller, 40, stepped out with her beau Oli Green, 25, in New York on Friday for a romantic stroll

The blonde beauty completed her look with olive green suede boots and a large black leather bag as she donned sunglasses for the sunny day.

She wore her light locks in loose waves over her shoulders and opted for a natural makeup look to show off her beautiful features.

Meanwhile, Oli dressed in light blue jeans, a faded shirt and a white T-shirt while spending quality time with his girlfriend.

Style: The actress showed off her abs in a green crop top and high-waisted black jeans for the low-key outing as she wrapped her arms around her handsome boyfriend

Sienna – who is 15 years older than Oli – first stepped out with the Burberry model in February at a New York Knicks match, confirming their romance.

Rising star Oli was the face of a Burberry 2018 campaign and has also modeled for high street retailer GAP.

Although he is also an actor and comes from one of the most prestigious families of the British art world – as his grandfather Richard Green owns two galleries in Mayfair.

Outfit: The blonde beauty completed her look with olive green suede boots and a large black leather bag while donning sunglasses for the sunny day

The couple enjoyed an extended sunny French outing this summer and seemed in love as they take the time to kick back.

The outing comes after Sienna and Sam Worthington announced they are teaming up with Kevin Costner on his new project, Horizon.

The Oscar winner, 67, co-wrote the epic historical drama, which will go into production in Utah on August 29.

In addition to starring in the film, he will also direct, produce and finance the extended story, which, according to Deadline, takes place over a 15-year period of expansion before and after the Civil War.

The upcoming western will be the first time the Yellowstone star has stepped behind the camera since the Open Range in 2003.

Expressing her joy at the casting, Sienna said, “I am so excited to embark on this epic journey with such a legendary actor and director at the helm.

“The story is compelling. I am very honored to be a part of it.”

New Role: The outing comes after Sienna and Sam Worthington announced they are teaming up with Kevin Costner on his new project, Horizon (pictured August 2022)