Julia Stiles: Jennifer Lopez was very disciplined on 'Hustlers' set

Julia Stiles says Jennifer Lopez was "very, very disciplined" on the set of 'Hustlers'.

The 'Save The Last Dance' actress plays the part of a journalist who closes in on Jennifer's alter ego Ramona and her stripper pals - who are played by the likes of Cardi B and Constance Wu - who carry out a series of crimes to seek revenge on their Wall Street clients.

And the 38-year-old star has revealed how her co-star was extremely professional in rehearsals.

Speaking to InStyle magazine, Julia said: "She's very, very disciplined.

"[Jennifer] was handed a full page monologue my first day shooting with her and she just read it a few times, closed her eyes, and then opened them and was like, OK, let's go.'"

The '10 Things I Hate About You' star also discussed how female characters who have behaved immorally always get judged "a lot more harshly" than men do.

She explained: "We judge female characters a lot more harshly, and if you have a female character doing something questionable, immoral, illegal, or unlikable, I find that storytellers have to jump through hoops to explain why she did that.

"If a male character's running around with a gun, it's cool, but if a woman is doing it, we have to have seen her suffer some horrible tragedy in order to justify it."

Meanwhile, whilst Jennifer, 50, might be a pro on screen, she previously admitted she was scared of taking on the stripper role because she is "exposing" herself more "emotionally and physically" than ever before.

She said: "It's a nightmare thinking about being up there.

"I'm exposing myself let's say - emotionally and physically more than I've ever done in a movie.

"And I've done love scenes and this and that, whatever, but not like I was up there like that."