She Cannes do old Hollywood glamour! Eva Longoria gets it right again on the red carpet in plunging white gown and dramatic train

She's been the belle of the ball at Cannes so far, wowing crowds in an array of incredible gowns while treading the red carpets.
And tonight Eva Longoria ensured that she held onto her fashion crown with yet another stunning floor-length creation.
It appears the 37-year-old has hit upon a formula that works, as she stepped out for the Rust and Bone premiere this evening once again wearing a full-length gown featuring a plunging neckline and long train.

If it ain't broke: Eva Longoria stepped out on the Cannes red carpet at the Rust and Bones premiere this evening wearing yet another gown featuring a plunging neckline

The star opted for white today, channeling old-Hollywood glamour with loose waves in her brunette hair.

Eva stuck with her usual make-up style, keeping the focus on smokey eyes, with minimal blush and subtle lipstick.
It must have taken quite  an effort not to trip in he elaborate ensemble, and Eva even tweeted a picture of herself being escorted down a flight of stairs by a body guard.

Old Hollywood: Soft waves in Eva's hair gave her a classic movie star look, and framed her face

Seductive effect: The sheer panels and scooped back of Eva's gown made for an alluring combination

Secret weapon: Eva recently revealed that she believes her long hair is a crucial part of looking sexy

Sheer panels and a scooped back added to the seductive overall effect of the outfit, and like yesterday Eva chose silver and diamond jewelry.
Yesterday Eva wowed in an oyster pink and silver gown featuring a train so long that she required assistance to make it down the red carpet at the Moonrise Kingdom premiere.
The main body of her dress featured intricate silver and diamante details, and a transparent cutaway section on the back.

L'Oreal through the years: Eva posted this picture of herself with Jane Fonda and Freida Pinto on her Twitter page today

Little help? Eva tweeted this snap of a photographer assisting her down the stairs

After making her way inside into the movie premiere, Eva wrote on Twitter: 'Just climbed the mythical Red Stairs of Cannes.Such a huge emotion, and what a fantastic Electric look!'
She changed into a  black and silver Alberta Ferretti dress for the latter half of the evening.
Eva also teamed up with Jane Fonda and Freida Pinto as the faces of L’Oreal for a photo-shoot yesterday before heading off to the red carpet.
She tweeted during the day: 'Beautiful morning on the rooftop of Martinez Hotel with #lorealcannes #canneselectric'

Earlier in the day: Eva teamed pale tan shorts with a sweet nude lace top to sign autographs

Full of beans: Despite her hectic schedule Eva appeared far from worn out

'Having lunch on the terrace with Loreal in Cannes! Gorgeous weather! #CannesElectric.'
Despite her extensive wardrobe, Eva recently revealed that she thinks of her hair as her secret weapon when it comes to glamour.
She told Gala France: 'You know, I'm Mexican and in our culture, long hair means sexy, like a weapon of mass destruction!'

A little more casual: Eva wore a blazer and white shirt at a photocall on the balcony of the Hotel Martinez today

Still gorgeous: Eva proved that she can work the low-key look just as effectively as red carpet glamour

Keeping her mane in check: Luckily a stylist was on hand to ensure the wind did no damage to Eva's locks

Catching some rays? Eva took full advantage of the gorgeous summer weather

The beauty is keen to maintain a natural look, and avoids overly-bold hues.
'In general, I'm not crazy about heavy make-up. In my everyday life, I wear almost nothing,' she explained.
'A great dose of moisturising cream and mascara and that's all!' she said.
'For a night out or an event, I like to accentuate my eyes with lovely smoky hues and above all, I never ever opt for a red bold lipstick, I only ever wear a discreet pink.'

Yesterday: Eva Longoria wowed in a Marchesa gown on the red carpet at the Cannes Film Festival last night, but the long train of the dress proved problematic

The 37-year-old has maintained a strict diet in preparation for her Cannes appearance.
'Right now, I'm on a very strict diet. I have eliminated rice, pasta and bread. I drink a lot of green tea. It's hard but it works, I lost pounds and I'm glad of it!' she revealed.
'And to tone my body, a trainer comes three times a week at home for muscle-building exercises.'

Caught the cameras' attention: Eva wore a stunning pale pink mermaid-style gown, fitted down to the knee when it flared into a long feathered train