Halle Berry turned heads as she attended the annual Mayor’s Lunch during the Cannes Film Festival on Wednesday.

The Hollywood icon, 58, looked effortlessly stunning in a green midi Gucci shirt dress, which cinched at the waist with a delicate fabric belt.

She elevated the chic ensemble with a pair of ɴuᴅᴇ heels and carried a burgundy Gucci handbag worth an eye-watering £1,600.

Adding to the glamour, Halle shielded her eyes with stylish burgundy sunglᴀsses and accessorised with a Van Cleef bracelet and a Cartier watch.

Beaming with joy, the star appeared in great spirits as she signed the guest book at the prestigious event.

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Halle Berry turned heads as she attended the annual Mayor’s Lunch during the Cannes Film Festival on Wednesday

The Hollywood icon, 58, looked effortlessly stunning in a green midi Gucci shirt dress, which cinched at the waist with a delicate fabric belt

Halle was joined at the lunch by Juliette Binoche, Hong Sang-soo, Jeremy Strong, Dieudo Hamadi, Alba Rohrwacher, Leila Slimani and Carlos Reygadas. 

The Mayor’s Lunch is traditionally hosted by the mayor of Cannes and is known for its A-list guests, who are treated to extensive food offerings and local delicacies.  

Cannes – where filmmakers, sales agents and journalists gather from around the world – is the Olympics of the big screen, with its own golden prize, the Palme d’Or, to give out at the end.

Filmmakers come from nearly every corner of the globe to showcase their films while dealmakers work through the night to sell finished films or packaged productions to various territories

But Trump sent shock waves through Hollywood and the international film community when he announced on May 4 that all movies ‘produced in Foreign Lands’ will face 100 per cent tariffs.

The White House has said no final decisions have been made. Options being explored include federal incentives for US-based productions, rather than tariffs.

This year, some of the first-time filmmakers at Cannes are already particularly well-known.

Kristen Stewart (The Chronology of Water), Scarlett Johansson (Eleanor the Great) and Harris Dickinson (Urchin) have all unveiled their feature directorial debuts in Cannes’ Un Certain Regard sidebar section.

She elevated the chic ensemble with a pair of ɴuᴅᴇ heels and carried a burgundy Gucci handbag worth an eye-watering £1.6k

Adding to the glamour, Halle shielded her eyes with stylish burgundy sunglᴀsses and accessorised with a Van Cleef bracelet and a Cartier watch

Beaming with joy, the star appeared in great spirits as she smiled for the cameras and signed the guest book at the prestigious event

She was joined at the event by Jeremy Strong, Hong Sang-soo, Dieudo Hamadi, Leïla Slimani, Alba Rohrwacher, Juliette Binoche, David Lisnard, Iris Knobloch,  Payal Kapadia, Carlos Reygada (L-R)

Read More Halle Berry stuns in a corseted gown with Izabel Goulart and Shanina Shaik at Chopard Gala in Cannes

Many Cannes veterans have returned, including Tom Cruise (Mission: Impossible – The Final Reckoning), Robert De Niro – who received an honorary Palme d´Or 49 years after Taxi Driver premiered in Cannes – and Quentin Tarantino, who paid tribute to low-budget Western director George Sherman.

Over recent years, the star-studded extravaganza has arguably won more attention for the outfits worn by its celebrity guests than the roster of feature films being screened on the Croisette.

But new nudity rules, devised for ‘the sake of decency’, have been implemented at this year’s festival.

According to organisers, the austere move is an attempt to stifle the celebrity trend for ‘naked dresses’ – namely provocative outfits that reveal considerably more than they conceal – on the red carpet.

‘For decency reasons, nudity is prohibited on the red carpet, as well as any other area of the festival,’ states a Cannes festival document.

‘The festival welcoming teams will be obligated to prohibit red carpet access to anyone not respecting these rules.’

It’s understood that the iconic venue now adopts a more conservative dress code, with suits, dinner jackets and floor-length evening gowns generally favoured over headline grabbing ensembles.

Classic little black dresses, cocktail dresses, pant-suits, dressy tops and elegant sandals, ‘with or without a heel’, will also be permitted.

While the decision to implement a more stringent policy will be a first, it is not known if French TV broadcasters, wary of airing nudity, played a role in its enforcement.

Major red carpet events, including the Cannes Film Festival, are aired in France by France Télévisions.