Damian Lewis puts on a casual display while out and about with girlfriend Alison Mosshart in New York

Damian Lewis puts on a casual display in a blue jacket and jeans as he steps out with his draped girlfriend Alison Mosshart for a walk in New York City.

Damian Lewis cut a casual figure when he stepped out in New York City with girlfriend Alison Mosshart on Tuesday.

The 52-year-old actor donned a navy puffer jacket and gray scarf, teamed with black jeans and blue New Balance sneakers for the trip.

Meanwhile, Alison, 44, opted for a camo hoodie and black skinny jeans.

The musician added a large light blue sweater underneath and added a matching pair of New Balance sneakers to go along with the look.

Alison carried her essentials in a blue bag as she walked the streets of New York with Damian.

Sweet: Damian Lewis cut a casual figure when he stepped out in New York City with girlfriend Alison Mosshart on Tuesday

Damian and Alison were all smiles as they enjoyed their walk together and snuggled together before crossing the street.

The couple are believed to have met through mutual friends while in London.

They had grown fond of each other, Mosshart’s mother, Vivian, 76, told MailOnline last year.

Speaking exclusively from his home in Florida, he said: “I don’t know how much flak I’m going to get for all of this, but of course we’re excited for her.”

They have friends in common. I don’t know exactly how they met, but I’m fine with that. If she is happy, we are happy. I have yet to meet him, but I would certainly like to.’

The couple were first photographed together in July at a swanky fundraising party for London’s National Gallery.

A fellow traveller, who saw the couple traveling to the event by train, told The Mail on Sunday that the two seemed “100 per cent romantically involved, like they were on a hot date.”

They were seen again at the Serpentine Gallery’s annual summer party, one of the highlights of the British capital’s social season.

Casual: The actor, 52, donned a navy puffer jacket and gray scarf, teamed with black jeans and blue New Balance sneakers for the trip

Casual: The actor, 52, donned a navy puffer jacket and gray scarf, teamed with black jeans and blue New Balance sneakers for the trip

Together: Alison, 44, meanwhile, opted for a camo fleece hoodie and black skinny jeans  The musician added a large light blue sweater under it and added a pair of New Balance sneakers to match the look.

Together: Alison, 44, meanwhile, opted for a camo fleece hoodie and black skinny jeans The musician added a large light blue sweater under it and added a pair of New Balance sneakers to match the look.

Touching: After her death, Damian revealed how his late wife Helen had urged him to find love again, telling him, his son and daughter that he wanted 'daddy to have lots of girlfriends' (pictured together in 2019)

Touching: After her death, Damian revealed how his late wife Helen had urged him to find love again, telling him, his son and daughter that he wanted ‘daddy to have lots of girlfriends’ (pictured together in 2019)

The pair were photographed once again at the British Formula One Grand Prix at Silverstone, with Alison taking to Instagram afterwards to write: “The absolute thrill.” I’m still floating… at 200 miles an hour.’

They then confirmed their relationship during an appearance at The House of KOKO private club summer party in July, during which Damian wore his wedding ring.

Damian’s late wife, Peaky Blinders actress Helen, tragically died after a secret battle with breast cancer.

After her death, he revealed how his late wife had urged him to find love again, telling him and their children that she wanted “daddy to have lots of girlfriends.”

Damian said in a social media post: ‘She died as she lived. Without fear. God we love her and we know how lucky we are to have had her in our lives. She burned so intensely. She sees now, Little One, in the air.