Lady in red! Scarlett Johansson shows off her toned legs in bright mini dress at Toronto Film Festival premiere of her animated movie Sing

PUBLISHED: 21:53, 11 September 2016 | UPDATED: 23:07, 11 September 2016

She has been keeping a low profile since welcoming daughter Rose Dorothy in 2014 with French husband Romain Dauriac.

But on Sunday Scarlett Johansson made sure to stand out in the star-studded crowd as she wore a red mini dress to the premiere of her new animated movie Sing at the Toronto International Film Festival.

Also at the event were the 31-year-old actress' cast mates Reese Witherspoon, Jennifer Hudson, Tori Kelly and Matthew McConaughey, who brought his wife Camila Alves.

Flaunting what she's got! Scarlett Johansson made sure to stand out at the premiere of her new animated film Sing at the Toronto International Film Festival on Sunday

The blonde actress looked confident as she walked the carpet.

With her tresses blowing back, she flashed a megawatt smile at the hundreds of fans waiting outside.

The Lucy star's dress moved nicely thanks to ultra light sheer fabric that gave a look at her sculpted arms. A nice bow tie in the front kept the number looking classy and conservative.

In style: The Lucy star's dress moved nicely thanks to ultra light sheer fabric that gave a look at her sculpted arms. A nice bow tie in the front kept the number looking classy and conservative

Time for the masses: With her tresses blowing back, she flashed a megawatt smile at the hundreds of fans waiting outside

Johansson paired the dress with chunky peep toe black platform heels that looked to be inspired by the 1940s.

The star appeared to wear no jewelry but her gold wedding band on her ring finger from husband of two years Romain, a journalist in Paris.

Scarlett has called the City Of Lights her home base since settling down with Dauriac.

Two much! Scarlett looked at ease as she posed with her co-star Reese, who was ravishing in an off-the-shoulder floral dress with her long blonde locks parted to the side

More ladies: Also in attendance was Hudson, also in red, and singer Tori Kelly

Scarlett looked at ease as she posed with her co-star Reese, who was ravishing in an off-the-shoulder floral dress with her long blonde locks parted to the side.

Also in attendance was Hudson, also in red, and singer Tori Kelly.

In the film Sing, Scarlett plays a porcupine, Reese plays a pig, Seth MacFarlane a mouse, Taron Egerton a gorilla, and Kelly and elephant (Tori Kelly.

They gather at a theater for a singing competition.

Sing's director is Garth Jennings and the feature won't come out in the US until December 21.

The A lister and his beauty: Matthew McConaughey wore a dark suit as he posed with Camila Alves, who was lovely in a lace and floral dress

What a vision! Jennifer Hudson arrived at the premiere of Sing in Toronto, Canada in a flattering red gown on Sunday

The Grammy winner showed off every bit of her star power in the long-sleeve dress, that cinched around her thin waistline, and accentuated her hourglass figure.

Wearing silver dainty heels and statement rings on each of her hands, she added a swipe of bold red lip to her make-up.

To top of the look, Jennifer styled her voluminous hair in a deep side part as her stylish bangs swept across her forehead.

Sophisticated: The Dreamgirls star gave off a sophisticated demeanor in her long-sleeve, red dress that featured a thigh-high slit and slightly plunging neckline

Waving at her fans: The 34-year-old actress and singer lent her voice in the animated film, Sing, which also stars Matthew McConaughey, Scarlett Johansson and Reese Witherspoon

Sing revolves around a theater-loving koala bear, voiced by Matthew McConaughey who tries to save his playhouse with an American-Idol inspired singing competition.

The Dreamgirls actress - who lent her voice in the film - also performed live at the advanced screening in Toronto along with Tori.

Produced by Universal and Illumination, CEO Chris Meledandri said in statement to Deadline a week ago: 'Jennifer Hudson and Tori Kelly give voice to the film’s message of the redemptive, transformative power of music. We are thrilled to have [them] perform at the Toronto Film Festival.'

Classic: The Grammy winner styled her hair in a deep side part with her thick bangs that swept across her forehead

Surprised? Jennifer was also scheduled to perform live at the advanced premiere of the film alongside Tori

Head-turner: The beauty added pops of silver with her dainty heels and shiny jewelry to top off the look

The busy actress is currently shooting Sandy Wexler, alongside Adam Sandler, where she plays an aspiring singer in the film.

She will also show off her musical chops in NBC's special, Hairspray Live! playing Motormouth Maybelle.

Starting off as a finalist on the third season of America Idol, she went on to win an Oscar and Golden Globe for playing Effie White in 2006's Dreamgirls.