Jennifer Lopez trades her high-heels for sneakers as she gets into character on set of new sports flick Unstoppable in LA

Jennifer Lopez looked gorgeous on the set of her new movie, Unstoppable, in Los Angeles on Friday.

The 54-year-old actress was seen wearing a flowing cream-colored blouse and wide-leg jeans instead of her usual glamorous ensembles as she transformed into her character.

The singer – who arrived the day before to settle down in trendy, dirt-covered jeans before slipping into a sexy, black mini-dress for filming – wore black Converse sneakers and carried a large, brown leather bag.

She was seen sticking to what appeared to be her script as she walked from her trailer to a downtown park to film a scene with her co-star, Jharrel Jerome.

She let her brunette locks fall in soft waves and modeled a dark, sultry makeup look with plenty of bronze blush and a deep purple lip.

Jennifer Lopez looked gorgeous on the set of her new movie, Unstoppable, in Los Angeles on Friday. The 54-year-old actress was seen wearing a flowing cream-colored blouse and wide-leg jeans instead of her usual glamorous ensembles as she transformed into her character

The Bronx native's latest project is a family affair, as Unstoppable will be produced by her husband, Ben Affleck, 51, and his company, Artists Equity, with Matt Damon.

This will be their first collaboration in two decades since working together on Gigli, an American romantic comedy crime film released in 2003.

The sports drama film, which stars JLo opposite Jerome, tells the true story of Anthony Robles – a three-time American athlete born with one leg.

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

He eventually wins a national championship at Arizona State University against the school that had 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 the feature debut of Oscar-winning Argo editor William Goldenburg.

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

She was seen sticking to what appeared to be her script as she walked from her trailer to a downtown park with her co-star, Jharrel Jerome, to begin filming.

She was seen sticking to what appeared to be her script as she walked from her trailer to a downtown park with her co-star, Jharrel Jerome, to begin filming.

The Bronx native's latest project is a family affair, as Unstoppable will be produced by her husband, Ben Affleck, 51, and his company, Artists Equity, with Matt Damon

The Bronx native's latest project is a family affair, as Unstoppable will be produced by her husband, Ben Affleck, 51, and his company, Artists Equity, with Matt Damon

The sports drama film, which stars JLo opposite Jerome, tells the true story of Anthony Robles – a three-time American athlete born with one leg.  He goes on to win the national championship at Arizona State University

The sports drama film, which stars JLo opposite Jerome, tells the true story of Anthony Robles – a three-time American athlete born with one leg. He goes on to win the national championship at Arizona State University

Lopez plays mother Judy Robles, while Jharrel Jerome plays son and wrestling champion Anthony;  seen in July 2011

Lopez plays mother Judy Robles, while Jharrel Jerome plays son and wrestling champion Anthony; seen in July 2011

Production on the film was previously halted due to the WGA strike in May, but resumed shooting on December 12.

The singer was seen arriving on Thursday, wearing baggy jeans and a chunky knit sweater.

She wore oversized sunglasses and had her hair up as she walked to the venue.

She later turned up the heat when she changed into a sizzling black minidress and gold strappy heels for the evening shoot at the Biltmore Hotel in downtown Los Angeles.

Unstoppable is distributed by Amazon MGM Studios. An official release date for the film has not yet been announced.