Jennifer Lopez gets into character in a white shirt and jeans on the Los Angeles set of new film Unstoppable

Jennifer Lopez was spotted on the set of her upcoming film Unstoppable on Monday in Los Angeles.

The 54-year-old longtime entertainer — who is married to Ben Affleck — wore a pleated, button-up white shirt with blue skinny jeans.

She added a pair of brown to-the-knee boots as she got into character as Judy Robles, the mother of athlete Anthony Robles, who the film is based on.

The Bronx native wore her hair in a side part and feathered waves that fell over her chest.

She donned large hoop earrings and a delicate gold necklace with a pendant. 

Jennifer Lopez was spotted on the set of her upcoming film Unstoppable on Monday in Los Angeles

The 54-year-old longtime entertainer — who is married to Ben Affleck — wore a pleated, button-up white shirt with blue skinny jeans

The 54-year-old longtime entertainer — who is married to Ben Affleck — wore a pleated, button-up white shirt with blue skinny jeans

Unstoppable is being produced by Affleck, 51, and his company Artists Equity, which he runs with Matt Damon.

This will be Jen and Ben’s first collaboration in 20 years, following their work on Gigli, a romantic comedy released in 2003.

Lopez’s latest movie tells the true story of Robles — a three-time all-American athlete born with one leg. He will be portrayed by actor Jharrel Jerome.

Despite his disability and growing up in an abusive household, Robles defeats the odds and becomes a NCAA Division 1 champion wrestler.

He ultimately wins a national championship at Arizona State University against the school that previously rejected him, Iowa University.

The biopic is based on the book Unstoppable: From Underdog to Undefeated: How I Became a Champion by Robles and Austin Murphy.

John Hindman adapted the book for the film, which will be Oscar-winning Argo editor William Goldenberg’s directorial debut.

Joining Lopez and Jerome in the cast are Don Cheadle, Michael Peña and Bobby Cannavale.

She added a pair of brown to-the-knee boots as she got into character as Judy Robles, the mother of athlete Jerome Robles, who the film is based on

She added a pair of brown to-the-knee boots as she got into character as Judy Robles, the mother of athlete Jerome Robles, who the film is based on

Lopez recently shared a bit of holiday cheer with her 253 million Instagram followers

Lopez recently shared a bit of holiday cheer with her 253 million Instagram followers

The star looked darling as she posed in front of a Christmas tree while wearing a billowing gold and white skirt

The star looked darling as she posed in front of a Christmas tree while wearing a billowing gold and white skirt 

Lopez recently shared a bit of holiday cheer with her 253 million Instagram followers.

The star looked darling as she posed in front of a Christmas tree while wearing a billowing gold and white skirt.

Last weekend she and her beau hosted a star-studded holiday bash that was attended by Michael B. Jordan and Margot Robbie.

‘The kids were all there dancing and having a great time, especially the twins and Violet,’ a source told People of Jennifer’s children with ex Marc Anthony, 15-year-old Emme and Max, and Ben’s 18-year-old daughter with ex-wife Jennifer Garner.

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