Sienna Miller, 41, puts on a loved-up display with boyfriend Oli Green, 25, at New York Knicks game

Sienna Miller and her boyfriend Oli Green gave a much-loved performance on Sunday as they chatted with Ben Stiller and his wife Christine during the New York Knicks game.

The actress, 41, has been in a relationship with Oli, who is 15 years her junior, since February last year.

The pair were clearly very immersed in the basketball game as they supported the New York Knicks in their battle against the Cleveland Cavaliers at Madison Square Garden in front of 20,000 fans.

Sienna and Oli looked cozy as they held hands and took photos together, while the Edge Of Love star looked stunning in a green and red paneled leather jacket.

She paired the look with wide-leg jeans and opted for little to no makeup for a casual look for a sporty day out.

Celebrity crowd: The pair were spotted alongside Ben Stiller and his wife Christine Taylor

She was wearing a NY Knicks cap as she got into the spirit of the game and cheered the team on to a 102-93 win.

The Vogue model had a very animated discussion with comedian Ben as she leaned over Oli – holding a loving hand on his knee – to discuss the ins and outs of the game from the front row.

Ben, 57, and his wife Christine also talked enthusiastically about the match – following their reunion during the coronavirus lockdown following an initial breakup in 2017.

Sienna and Oli have been dating since February 2022 and have made a ton of sweet appearances together since they went public with their relationship.

It comes after Sienna recently said she spent years investing in a relationship with someone who was “a person’s bucket with a hole in it.”

The actress revealed that she thought she would get married and have kids by the age of 30, but the relationships she had during those years didn’t work out.

Speaking to British Vogue, Sienna said, “I had what felt like the important years invested in something that was just a bucket with a hole in it from a person. I wasted time. And I felt like time was really my currency.”

She was quick to point out that she wasn’t referring to Tom Sturridge, who she dated from 2011 to 2015 and shares daughter Marlowe, 10, with.

Important conversation: The actress leaned over Oli, lovingly touching his knee, to animatedly discuss the game with Ben

Getting in the mood: The four threw up their hands as they supported the Knicks to their 102-93 victory

Happy couple: Sienna and Oli have been dating since February 2022, despite him being 15 years younger than them

Making Memories: The pair took photos and selfies together while making the most of the experience

Stunning: The former Vogue model wore a leather jacket with green and red panels, which she paired with denim-style wide-leg pants

Good game: The A-listers were thrilled as they cheered on the New York Knicks against the Cleveland Cavaliers

Couple: Ben and Christine initially split in 2017 after 17 years of marriage, but reunited during the coronavirus lockdown

Sightings: Comedian Pete Davidson (second from left) was also spotted in the celebrity crowd

Victory: New York Knicks guard Josh Hart (3) reacts after scoring in the second half of Game 4

But the pair proved they were friends recently, when they partied this summer at this year’s Glastonbury festival with their respective partners – Oli and Alexa Chung.

Prior to her relationship with Tom, Sienna was engaged to fellow actor Jude Law in 2004 after he popped the question on Christmas Day.

He apologized to her in July of the following year for having an affair with his children’s nanny.

Sienna also had a highly publicized affair with the actor Bathlazar Getty in 2008.

Reflecting on how difficult her thirties were, she added, “There was a lot of anxiety. Relationships did not work out – I imagined that I would be married and have three children, be a wonderful mother. I love being a mother. That’s what I’m good at.’