The 29-year-old actress - who was nominated for a BAFTA award for her role
in 1999 movie 'American Beauty' - is said to have had "no problems" with the
nudity in gritty crime thriller 'Stuck'.

An insider said: "She just took her clothes off and got on with it!"

In the movie, Mena plays Brandi, a retirement home nurse who accidentally
hits a homeless man while drink driving.

She continues driving home even though the man, who was not killed by the
accident, is still lying across her windscreen.

Earlier this month, Mena, 29, announced her engagement to music producer
Simone Sestito - who met the actress last year at the Toronto International
Film Festival.

Despite accepting the proposal, Mena - who was previously married to Robert
Brinkman, a 46-year-old cinematographer - is said to be keen to wait before
tying the knot again.

A source close to the actress revealed: "They're taking their time planning
the wedding. They are in no rush."

Simone is the founder and Chief Executive Officer (CEO) of concert promotion
company ISSIMO.