No wonder he's so besotted! Busty Heidi Klum, 42, looks sensational in a stunning yellow gown as she cosies up to beau Vito Schnabel, 29, at Cannes amfAR Gala

She's spent the past week on the French Riviera.

So no wonder Heidi Klum looked glowing and relaxed as she arrived at the amfAR Cinema Against AIDS Gala on Thursday night, before being joined later by boyfriend Vito Schnabel.

The stunning German supermodel, 42, showed off her braless chest and legs in a plunging yellow floor-length number with thigh-high split as she arrived at the Hotel du Cap-Eden-Roc in Antibes.

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Mellow yellow: Supermodel Heidi Klum arrived at the amfAR Cinema Against AIDS Gala in Antibes, France on Thursday night

Mellow yellow: Supermodel Heidi Klum arrived at the amfAR Cinema Against AIDS Gala in Antibes, France on Thursday night

With its scooped neckline and fitted design on the waist, it was complete with a sexy thigh-high split, allowing her to show off her tanned, toned pins for all to see. 

The mother-of-two teamed her show-stopping dress with a pair of silver high-heels sandals, with her dark blonde hair swept into a tight bun. 

The America's Got Talent judge gave an added splash of colour with turquoise jewellery.  

Throughout the evening the stunning star made sure to flaunt her willowy figure in various situations, making the most of her beautiful attire.

Beauty: The supermodel, 42, showed off her chest and legs in a plunging yellow floor-length number with thigh-high split

Beauty: The supermodel, 42, showed off her chest and legs in a plunging yellow floor-length number with thigh-high split

Look of love: Once inside the event, Heidi and Vito - who didn't walk the red carpet - shared an intimate moment in the packed-out room

Look of love: Once inside the event, Heidi and Vito - who didn't walk the red carpet - shared an intimate moment in the packed-out room

Whispering sweet nothings? With her ample chest on full display, she leant up to speak into her younger beau's ear

Whispering sweet nothings? With her ample chest on full display, she leant up to speak into her younger beau's ear

And, once inside the event, it was clear to see her 29-year-old boyfriend - who didn't walk the red carpet - couldn't wait to catch up with her.

As she sat at her dinner table, the art curator couldn't resist leaning in closely for a chat, the two of them putting on an intimate display in the packed-out room. 

Their super-sweet display also saw Heidi wearing what appeared to be his suit jacket caped over her shoulders to protect her from feeling chilly. 

Earlier on Thursday, Heidi tweeted: 'Looking forward to joining @amfAR tonight! Proud to be supporting the fight to end #AIDS #amfARCannes.'

Riviera life: The German-born star was sporting a glowing tan after spending a week relaxing on the French coast
Riviera life: The German-born star was sporting a glowing tan after spending a week relaxing on the French coast

Riviera life: The German-born star was sporting a glowing tan after spending a week relaxing on the French coast

Go mellow yellow with Heidi's Versace gown

Amongst a sea of black, red and dark colours, Heidi Klum was one of the few celebs to opt for a spring shade this evening at the Amfar Gala at Cannes. Looking pretty in a pastel yellow plunge gown by Atelier Versace, Heidi was her usual stunning self, showing the younger models exactly how it's done.

We're not always sure about yellow on the red carpet but it's been a popular choice at Cannes this year, and if there's one person who can convince us of the colour it's Heidi. With that megawatt smile, golden blonde locks and killer figure, Heidi makes this mellow yellow shade look super sexy. Her dress featured a fitted top with plunging neckline and a soft chiffon skirt with thigh high side split (one thing it seems everyone is going for at this year’s Cannes).

If you want to channel a little of Heidi's sunshine style, then the good news is there are plenty of yellow frocks to choose from on the high street. Shop our edit below with styles from Jill Stuart, TFNC, and Forever 21.

* PRICES MAY NOT BE AS ADVERTISED

Heidi arrived on the French Riviera last Friday and has been treating it as an opportunity to relax with her boyfriend Vito.

The pair have been spotted working on their tans at the Hotel du Cap-Eden-Roc, which boasts views over the Mediterranean sea.

So Heidi certainly didn't have far to travel to Thursday's lavish do, generally regarded as the biggest event on the Cannes calendar. 

She didn't travel far! Heidi has been staying at the Hotel du Cap-Eden-Roc all week
She didn't travel far! Heidi has been staying at the Hotel du Cap-Eden-Roc all week

She didn't travel far! Heidi has been staying at the Hotel du Cap-Eden-Roc all week

Fashionable friends: Heidi joined fashion designer Kenneth Cole and her former Victoria's Secret colleague Alessandra Ambrosio

Fashionable friends: Heidi joined fashion designer Kenneth Cole and her former Victoria's Secret colleague Alessandra Ambrosio

Legs eleven: The pair had certainly gone for similar styles with plunging necklines and thigh-high splits

Legs eleven: The pair had certainly gone for similar styles with plunging necklines and thigh-high splits

Sensation: There was no let-up on Heidi's posing throughout the night, as she made sure to get the most out of her stunning gown

Sensation: There was no let-up on Heidi's posing throughout the night, as she made sure to get the most out of her stunning gown

The fundraiser, which raises money for AIDs research, saw the likes of Katy Perry perform for the A-list crowd, while Adriana Lima co-chaired the event.

After posing up a storm on the red carpet, the celebrities make their way into a lavish dinner which is followed by a no expense spared auction, with last year's event raising a staggering $30million.

The event, which takes place just outside of Cannes, will also feature Kirsten Dunst, Vanessa Paradis and Donald Sutherland who are serving as chairs for the Cannes Film Festival Jury.

Glamour girls: Heidi cosies up with Alessandra and Ana Beatriz Barros

Glamour girls: Heidi cosies up with Alessandra and Ana Beatriz Barros

Sparkling: Heidi complemented her yellow dress with turquoise make-up

Sparkling: Heidi complemented her yellow dress with turquoise make-up

Doing her bit: Heidi took to the stage to present one of the auction lots

Doing her bit: Heidi took to the stage to present one of the auction lots

Loving their getaway: Vito, 29, looked in great spirits as he chatted to his beautiful lady

Loving their getaway: Vito, 29, looked in great spirits as he chatted to his beautiful lady

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