The real Queen of the Night? Keira Knightley stuns in scarlet gown as she arrives with husband James Righton at premiere of Sofia Coppola's debut opera

She's taken on many a look in her time as an actress, from period pirate to Dickensian dame.

But on Sunday evening in Rome Keira Knightley appeared to have taken some influence from the tomes of operatic history as she embraced a sizzling theatrical inspired sartorial theme.

Arriving at the Teatro dell'Opera di Roma for the premiere of Sofia Coppola's La Traviata alongside her husband James Righton, the 31-year-old actress looked sensational in flesh-flashing scarlet gown.

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The real Queen of the night? On Sunday evening in Rome Keira Knightley appeared to have taken some influence from the tomes of operatic history as she embraced a sizzling theatrical inspired sartorial theme 

Date night? Arriving at the Teatro dell'Opera di Roma for the premiere of Sofia Coppola's La Traviata alongside her husband James Righton, the 31-year-old actress looked sensational in flesh-flashing scarlet gown 

The couple were among a host of A-List guests who turned out for the first performance of the director's - daughter of cinema icon Francis Ford Coppola - take on Giuseppe Verdi's classic opera.

And they were clearly delighted with the opportunity to enjoy a romantic evening out, with the star looking more loved-up than ever as they made their way to the La Traviata premiere under the Roman sun. 

Keira looked to have taken some inspiration form Mozart's opera, The Magic Flute, and channeled the character The Queen of the Night as she conquered the style stakes in a ruched red sleeveless number.

When in Rome! The couple were among a host of A-List guests who turned out for the first performance of the director's - daughter of cinema icon Francis Ford Coppola - take on Giuseppe Verdi's classic opera

Featuring a halterneck design, which featured tow neck to navel slashes, allowed the actress to flash a tantalizing hint of her alabaster skin in the backless number. 

With a knotted belt detail on the waist, the Imitation Game star ensured she showcased her phenomenal figure. 

Rounding the long trailing dress off with a pair of contrasting gold stilettos, the brunette beauty added some subtle definition to her slender frame.

A Rome-antic evening out: Clearly delighted with the opportunity to enjoy a romantic evening out, with the star looking more loved-up than ever as they made their way to the La Traviata premiere under the Roman sun

Happy family: The couple - who have been married three years - still looked a perfect match

Lady in red: Keira looked to have taken some inspiration form Mozart's opera, The Magic Flute, and channeled the character The Queen of the Night as she conquered the style stakes in a ruched red sleeveless number 

Wearing her long chestnut tresses in an elegant centre-parting, which tumbled down her back, allowing her striking and radiant features to shine through.

Using a natural palette of make-up, Keira subtly highlight her pretty face with a flash of mascara, a hint of blusher and a slick of pink lipstick.

She arrived on the red carpet alongside her rocker husband, James, 32, who looked debonair and suave in a slim cut tuxedo, shirt and tie.

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Channeling a grecian goddess, Keira Knightley stole the spotlight at the La Traviata Opera in Rome, Italy. The new mother showed off her trim post-baby figure in a draped gown by Valentino.

The velvet number had a halter neckline and slits along the bodice as well as a belted neckline. We adore the deep red hue and floor sweeping hemline that showed just a hint of Keira's metallic shoes.

Though the temperatures are rising, velvet is still a viable option to wear this summer. Take a cue from Keira and wear an open and airy design. Her exact number is straight from the runway so you won't find it anywhere online or in stores, but you can buy Valentino at Net-A-Porter by clicking right.

Then shop our edit below for similar styles from Forever 21, Black Halo and more. Team with some black strappy sandals and look like a red carpet diva.

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Sartorial sizzle: Featuring a halterneck design, which featured tow neck to navel slashes, allowed the actress to flash a tantalizing hint of her alabaster skin in the backless number

Screen siren: Wearing her long chestnut tresses in an elegant centre-parting, which tumbled down her back, allowing her striking and radiant features to shine through 

Chic couple: She arrived on the red carpet alongside her rocker husband, James, 32, who looked debonair and suave in a slim cut tuxedo, shirt and tie (picture L-R Grazia Chiuri, James, Keira and Pierpaolo Piccioli)

The Klaxons' frontman sported his bushy thick hair in a sweeping fringe, while he kept his features clean shaven for the event.

Other famous faces at the event included Kim Kardashian and Kanye West, who arrived together following a stay in Cannes for the 69th Film Festival.

Kim embraced her usual red carpet raciness, and donned a white gown which featured thigh-high slash from Vivienne Westwood's latest collection. 

Here come the Wests! Other famous faces at the event included Kim Kardashian and Kanye West, who arrived together following a stay in Cannes for the 69th Film Festival