She's known for her role in thrillers such as The Awakening, Iron Man, Transcendence and The Gift.

But Rebecca Hall, 34, showed off her lighter side as she soaked up the sun on the beach in Taormina, Italy, on Monday, where the film festival is taking place.

The 34-year-old flaunted her svelte frame in a barely-there red bikini that exposed her slender curves and enviably taut abs and nearly lost her balances as she walked on the stony sea-bed.

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Red hot! Actress Rebecca Hall looked stunning in a halter bikini but almost lost her balance as she made her way into the sea Taormina, Italy, on Monday

Meanwhile the halterneck detailing of the two-piece accentuated her perky cleavage, in a flattering fashion.

The actress rocked a retro look for her day at the beach as she styled her sleek brunette hair into a short bob that skimmed her defined jawbone and framed her face with a deep side parting.

And she showed off her natural beauty with barely there makeup, which highlighted her fresh faced features.

Flaunting it! The 34-year-old flaunted her enviably svelte frame in a barely-there red bikini that exposed her slender curves and enviably taut abs

Beach babe: The halterneck detailing of the two-piece accentuated her perky cleavage, in a flattering fashion

Rebecca appeared to be having a whale of a time as she made a splash in the clear blue waters and posed in a satisfied stance with her hands on her hips.

However, she made sure to be careful as she ventured across the slippery rocks, as she put her arms out to stablise herself to avoid a fall.

And she finally submerged herself in the rippling tides where she looked out peacefully into the distance.

Bobbing along: The actress rocked a retro look for her day at the beach as she styled her sleek brunette hair into a short bob

Stunning! Rebecca showed off her natural beauty with barely there makeup, which highlighted her fresh faced features

Sizzling! Rebecca appeared to be having a whale of a time as she made a splash in the clear blue waters

As she arose from the water, Rebecca looked every inch the beach goddess as water dripped from her toned frame while she headed back to land to dry off in the scorching heat.

Earlier this year, Rebecca starred in a film about the tragic life of Christine Chubbuck - an American news anchor who shot herself live on air.

The movie, called Christine, premiered at the Sundance Film Festival in Utah.

Safety first! Rebecca made sure to be careful as she ventured across the slippery rocks, as she put her arms out to stablise herself

Causing waves: Rebecca looked every inch the beach goddess as water dripped from her toned frame while she headed back to land

Testing the waters: Rebecca put her hands in the clear blue water as she tested the temperature

Ms Chubbuck killed herself while reading the news for a local Sarasota, Florida, TV station in July 1974, aged 29.

The lead up to that tragic day has been portrayed by Antonio Campos, with British Hollywood actress Rebecca Hall playing the lead role.

Campos' feature takes a sympathetic look at the build up to the shocking act and ponders whether she had mental health issues.

Soaking up the rays: Rebecca posed in a satisfied stance with her hands on her hips

Keeping afloat! Rebecca submerged herself in the rippling tides where she looked out peacefully into the distance

Hall, who has featured in a host of films including Frost/Nixon and Iron Man 3, hopes the story can raise awareness about rare mental illnesses.

She told Indiewire: 'In many ways, there is still so much stigma and misinformation around these sorts of things, to the point that people who are suffering from these problems don't seek the help that is available now in a way that it definitely wouldn't have been available for Christine then.

'A lot that has to do with this sort of misunderstanding, there's still a kind of 'pull yourself up by your bootstraps' mentality.

'Destigmatizing it helps to make it human. Otherwise, you're left in a situation of 'I'm a just a bad person. I'm just a bad person and I can't ask for help, I can't do that,' which is what Christine does.'

Balancing act! Rebecca looked slightly unstable as she ventured into the water

Back to dry land: The star turned her back on the water as she made her way back to the beach