Lucy Boynton says Rami Malek was "a stranger" on the set of 'Bohemian Rhapsody'.

Lucy Boynton

Lucy Boynton

The 24-year-old actress plays Freddie Mercury's longtime friend and former fiancee Mary Austin in the biopic, and she admitted her co-star's transformation into the Queen frontman was remarkable.

Speaking about the feeling Freddie was actually stood there with them, she told HeyUGuys: "Yeah, totally, until you see Rami Malek in the makeup trailer at the end of the day without everything and it's like there's a stranger on our set.

"And then you come to work and it's Freddie, and it's like, well, that's a person I know."

Bonyton stunned in a pink gown as she was joined by fellow actors Malek, Ben Hardy and Gwilym Lee - and Queen legends Brian May and Roger Taylor - at the film's premiere on Tuesday (23.10.18) at London's Wembley Arena.

The 'Murder on the Orient Express' star - who has been romantically linked to Malek since April - admitted there was a feeling that his performance was "something very special".

She added: "I think we could all see it on set. What you see in the film is what we saw on set, he just completely disappeared and was totally Freddie.

"It was incredible, it was amazing to have that energy. But yeah, you were very much aware that something very special is happening."

The movie wasn't without its difficulties, and just three months into shooting director Bryan Singer was replaced by Dexter Fletcher who completed the film.

Asked about how it impacted the feeling on set, Boynton explained: "Rami set the tone and energy on set everyday. Because that was constant without the entire shoot, that was a really powerful constant to have."