Charlize Theron goes low-key in blue sweater and jeans as she jets back in to LA following glamorous Cannes appearance

She turned heads at the Cannes Film Festival last week where she shared the red-carpet with ex-fiance, Sean Penn.

But Charlize Theron can finally breathe a sigh of relief after she arrived back in Los Angeles's LAX airport without her former flame. 

The 40-year-old actress was comfortably dressed as she made her way through the airport on Wednesday in all the flight essentials. 

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Back in town: Charlize Theron, 40,  arrived back at Lax, Los Angeles on Wednesday

The South African beauty opted for a sheer blue sweater, which she layered with a white basic top underneath.

She paraded forth in ankle-length grey jeans and black trainers while sporting a grey hoodie tied around her waist.

Making sure she was prepared after landing in the sunny surroundings of California, she went make-up free and shielded her eyes behind a pair of black sunglasses.

Adding the final touch to her flying look, Charlize tied her blonde locks up in a tight bun.

The star meandered through the airport to head home for a spot of rest, which was understandable after her glamorous non-stop work duties in the south of France.

Staples: The South African beauty opted for a sheer blue knit top, which she layered with a white top underneath.

Cutting a more jovial display at The Last Face screening last week, she posed up a storm with her co-star, Adele Exarchopoulos.

Charlize exuded confidence in an androgynous trouser suit which she teamed with a plunging white top and diamond-encrusted chain around her neck.

Joining Charlize on the celebrity laden red carpet was her former flame Sean, who directed the movie, which also stars Javier Bardem and Jean Reno.

Relations between Sean and Charlize seem particularly frosty as they promoted their joint film at a photocall earlier in the day, as they reunited on the world's stage for the first time since they called off their engagement in 2015.

Hollywood beauty The Mad Max: Fury Road star proved trouser suits could still be sexy as she posed before the sea of photographers in a black ensemble that comprised of a tailored blazer and black flared trousers

If looks could kill: The Oscar-winner looked less than impressed with her former love Sean Penn during a press conference

The ex-lovers, who ended their relationship after a year-and-a-half together, kept their distance at the event though the award-winning actress looked to have taken the metaphorical high ground in the form of her show-stopping display.

But Charlize's mood appeared to juxtapose greatly with her sweet and flirty look as the actress was pictured giving her former partner a less than friendly look at the press conference. 

Reports emerged in June 2015 claiming that Charlize had cut off contact with the actor-turned-director after they spent time together promoting her movie Mad Max: Fury Road at last year's Cannes Film Festival.

Trend-setter: The South African starlet offset the look with a white shirt that boasted an incredibly low-cut neckline that provocatively conceded just above the navel, though Charlize ensured the garment didn't swamp her enviably svelte frame by tucking it into her waistband

Charlize later denied the 'ghosting' reports in an interview with WSJ magazine in April, when she said: 'There is a need to sensationalize things. When you leave a relationship there has to be some f***ing crazy story or some crazy drama.

'And the f***ing ghosting thing, like literally, I still don't even know what it is. It's just its own beast. We were in a relationship and then it didn't work anymore. And we both decided to separate. That's it.' 

Charlize is now concentrating all her efforts on her villainous role in Fast and Furious' new movie- Fast 8, alongside Dwayne Johnson and Vin Diesel.

Looking tough: Charlie in the first look at her Fast 8 character Cipher