Hearts afire! Elle Fanning is ravishing in plunging red gown at premiere of her new film Trumbo

By Helen Zhao for MailOnline

Published: 02:42 EST, 13 September 2015 | Updated: 09:52 EST, 13 September 2015

She's one of the busiest young actresses in Hollywood, and Elle Fanning pulled out all the stops for her second movie premiere in one night.

The 17-year-old actress looked ravishing in a plunging red gown at the debut of Trumbo at the Toronto International Film Festival on Saturday. 

Elle's skirt featured ruffle detailing and swished as she strode along in shiny purple heels that matched the purple floral accents at her waist. 

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Fashionista: Elle Fanning looked ravishing in a plunging red gown at the debut of her new film Trumbo at the Toronto International Film Festival on Saturday

Fashionista: Elle Fanning looked ravishing in a plunging red gown at the debut of her new film Trumbo at the Toronto International Film Festival on Saturday

The Maleficent star's flaxen hair was worn sleek and straight, with a sparkling jewel encrusted clip.

She was joined at the premiere by her co-stars, Bryan Cranston and Helen Mirren, who brought her husband, Taylor Hackford.

Helen and Taylor, both 70-years-old, appeared happily in love, despite having been married since 1997.

Bryan, 59, stars in the title role as Dalton Trumbo, a Hollywood screenwriter whose successful career comes to an end when he was blacklisted in the 1940s for being a Communist. 

Red carpet glam: The 17-year-old actress' skirt featured ruffle detailing and swished as she strode along in shiny purple heels that matched the purple floral accents at her waist

Red carpet glam: The 17-year-old actress' skirt featured ruffle detailing and swished as she strode along in shiny purple heels that matched the purple floral accents at her waist

All smiles: Elle flashed her signature megawatt smile, waving as she posed for photos
All smiles: Elle flashed her signature megawatt smile, waving as she posed for photos

All smiles: Elle flashed her signature megawatt smile, waving as she posed for photos 

Finishing touch: The Maleficent star’s flaxen hair was worn sleek and straight, with a sparkling jewel encrusted clip
Finishing touch: The Maleficent star’s flaxen hair was worn sleek and straight, with a sparkling jewel encrusted clip

Finishing touch: The Maleficent star's flaxen hair was worn sleek and straight, with a sparkling jewel encrusted clip

Elle plays his daughter in the film which also stars Louis CK and Diane Lane.

The younger sister of Dakota Fanning has expressed great enthusiasm about working with Bryan, though she previously admitted she hadn't seen Breaking Bad.

'I feel like I always have homework to do and I don't watch much TV, so I haven't seen it,' Elle told Collider in September 2014.

Leading man: Bryan Cranston stars in the title role as Dalton Trumbo, a Hollywood screenwriter whose successful career comes to an end when he was blacklisted in the 1940s for being a Communist

Leading man: Bryan Cranston stars in the title role as Dalton Trumbo, a Hollywood screenwriter whose successful career comes to an end when he was blacklisted in the 1940s for being a Communist

Happy couple: Helen Mirren, who also stars in the film, was joined by her husband, Taylor Hackford

Happy couple: Helen Mirren, who also stars in the film, was joined by her husband, Taylor Hackford

The fire is still alive! Helen, 70, and Taylor, 70, appeared happily in love, despite having been married since 1997

The fire is still alive! Helen, 70, and Taylor, 70, appeared happily in love, despite having been married since 1997

Sophisticated: The Queen star appeared very regal in an exquisite red and black dress and black pumps 

Sophisticated: The Queen star appeared very regal in an exquisite red and black dress and black pumps 

'A lot of my friends watched it. They loved it. "It's like the best thing ever!" They're very excited I'm working with him. Very.'

The Trumbo premiere followed on the heels of the premiere for her new film About Ray, which debuted earlier in the day.

In the indie dramedy, Elle plays a transgender teen named Ray, who must track down his estranged father to get legal consent for gender reassignment.

The timely tale - hitting US theaters September 18 - also stars Naomi Watts, Susan Sarandon, and Tate Donovan. 

Warmth: Helen arrived to the premiere wrapped in a colourful shawl 

Warmth: Helen arrived to the premiere wrapped in a colourful shawl 

Getting in character: Elle plays Trumbo's daughter in the film which also stars Louis CK and Diane Lane

Getting in character: Elle plays Trumbo's daughter in the film which also stars Louis CK and Diane Lane

Busy bee: Earlier on Saturday, Elle attended the premiere of her new film, About Ray 

Busy bee: Earlier on Saturday, Elle attended the premiere of her new film, About Ray 

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