Should Miley Cyrus Be Worried About 'Maneater' Amber Heard? 1

Miley Cyrus sticks close by her man, Liam Hemsworth in Philadelphia. (Photo: INFDaily)

Miley Cyrus is sticking close to fiance Liam Hemsworth while he shoots scenes in Philadelphia for his new film with hot actress Amber Heard, a sexually free-wheeling maneater, rivaling a young Angelina Jolie. Should she be worried?

Heard is Hemsworth’s on-screen love interest in the movie “Paranoia,” and it wouldn’t be the first time she gets involved with a co-star off-screen as well.

The 26-year-old actress reportedly became involved in a “locationship” with co-star Johnny Depp during filming of the 2011 film “The Rum Diary.” Depp subsequently split from his long-time partner, French actress and singer Vanessa Paradis.

Depp and Paradis, however, were already on the rocks by the time filming began on the movie. In contrast, Cyrus, 19, and Hemsworth, 22, recently got engaged. And, Miley at least in public, doesn’t appear to be the insanely jealous type.

Still, she’s dramatically changed her image with a sexy goth-rocker pixie cut and dyed blonde hair. She’s also upped the amount of pierced jewelry she wears and has gone back to sexier rocker-chic clothes.

She also flew to Philadelphia to be by Hemsworth’s side. The two have been spotted out and about between filming.

Heard is normally a blonde but has dyed her hair a dark brunette for her part in the movie. She plays Jenna Fletcher, the love interest of Hemsworth’s character Adam Cassidy.

The film, which also stars Gary Oldman and Harrison Ford, is about a company boss who blackmails an employee, played by Hemsworth, to spy on a rival company.

Heard’s free-wheeling sexuality may be enough to give Miley cause for concern. She openly admitted she is bi-sexual and has been dating photographer Tasya van Ree in an on-again, off-again relationship.

Paranoia is scheduled to hit theaters in Sept. 2013.