Finding sisterhood amid the corsets in 'Mary Queen of Scots'

Actor Saoirse Ronan playing Mary Stuart is seen in this undated handout image from "Mary Queen of Scots". REUTERS/Focus Features/Liam Daniel/Handout

LOS ANGELES (Reuters) - There's nothing quite like a corset when it comes to channeling female frustration.

So say Saoirse Ronan and Margot Robbie, who also had horses, blustery winds, wigs and rain to deal with when filming the royal historical movie "Mary Queen of Scots," out in U.S. movie theaters on Friday

Margot Robbie is seen as Queen Elizabeth I in this undated handout image from "Mary Queen of Scots". REUTERS/Focus Features/Liam Daniel/Handout

Yet the two actresses said they welcomed the battles with the elements when making the movie about the true-life rivalry between 16th century Queen Elizabeth I of England and her distant cousin Mary Stuart.

"The costumes were incredibly made. Those corsets - you feel like you can't breath sometimes. It's very helpful when you are feeling frustrated with your male advisers, to feel that shortness of breath," said Robbie, who plays Elizabeth.

"Mary Queen of Scots" has sisterhood and frustration aplenty as the two young royals wrestle with politics, plots, power, love and their scheming male advisers.

(L-R) Ian Hart as Lord Maitland, Jack Lowden as Lord Darnley, Saoirse Ronan as Mary Stuart and James McArdle as Earl of Moray are seen in this undated handout image from "Mary Queen of Scots". REUTERS/Focus Features/Liam Daniel/Handout

It is one of several movies winning attention as Hollywood's awards season swings into gear that is headlined by two or more women. It is also directed by a woman - Britain's Josie Rourke but was made before the #MeToo movement fueled demands for more female voices in Hollywood.

Ronan, playing the headstrong Mary who claimed both the Scottish and English thrones some 450 years ago, said she loved filming outdoors.

"I loved being on a horse. When you are having to deal with the elements and a corseted costume and animals, it informs the performance," the actress said.

(L-R) Grace Molony as Dorothy Stafford, Margot Robbie as Queen Elizabeth I and Georgia Burnell as Kate Carey are seen in this undated handout image from "Mary Queen of Scots". REUTERS/Focus Features/Parisa Tag/Handout

Despite feeling a connection because of their positions of female power, the two royals were lifelong rivals.

"Elizabeth gave England the longest period of peace...but I think as a person, she lost everything - her womanhood, her humanity," said Robbie. "I think she so badly wished she could behave the way Mary did sometimes."

The film contains only one (imagined) scene when they meet, and Mary begs Elizabeth for her help and protection.

Robbie said that after the two actresses deliberately kept themselves apart during weeks of shooting, the scene was intense.

"To see Mary standing there, young and fierce and asking for help and knowing I wasn't going to give it, was heart-breaking," she said. "I was sobbing. It was a really, really emotional moment for me."

(Reporting by Jill Serjeant; Editing by Leslie Adler)