Ewan McGregor and Mary Elizabeth Winstead
Ewan McGregor and Mary Elizabeth Winstead sparked romance rumours after they were spotted kissing Getty

Ewan McGregor and Mary Elizabeth Winstead made a big splash on the Internet last month when photos of the two kissing at a restaurant in London surfaced online.

On Saturday, (11 November), the Fargo co-stars decided to go public with their romance, with the two stepping out hand-in-hand in Hollywood, California.

Wearing matching outfits – a combination of black biker leather jackets, blue skinny jeans and dark boots – the two were seen strutting down the street while holding hands.

For the outing, Winstead, 32, went minimal with her makeup and let her cropped locks loose, while the Trainspotting actor, 46, unzipped his jacket and left his short hair in messy spikes.

"They looked very happy together, and were both whistling a tune," an onlooker told The Scottish Sun. "They didn't seem to have a care in the world. And they certainly weren't hiding the fact that they are a couple."

McGregor and his estranged wife Eve Mavrakis recently posted photos of themselves on social media without their wedding rings.

Mavrakis, 51, who is a production designer, was reportedly "furious" after learning about her husband's relationship with Winstead. Mavrakis was said to be "heartbroken" as well and trying her best to handle her husband's romance with the actress in a dignified way.

"Mary went to the house once and met Eve and the kids over dinner. She was very cordial. It seemed logical she should get to know Ewan and the family," a source told The Sun.

"She is doing her best to handle it with dignity. But what makes it worse is she has been told Mary Elizabeth had a teenage crush on Ewan. I'm sure a lot of people did but they didn't go and have an affair with him."

McGregor and Mavrakis have been married since 1995 and have four children.