The saying goes that diamonds are a girl’s best friend.

And who better to champion this than two of the acting world’s biggest and most illustrious stars, Anne Hathaway and Julia Roberts.

The actresses, 39 and 54 respectively, made standout arrivals during the third day of the 75th Annual Cannes Film Festival on Thursday – owing to the fact they walked the red carpet draped in dazzling jewels.

Diamonds are a girl’s best friend! Anne Hathaway (pictured) and Julia Roberts walked the Cannes Film Festival red carpet draped in dazzling jewels on Thursday as they attended the premiere of Armageddon Time

Anne, a star in the evening’s screening of historical film Armageddon Time, debuted the elegant Bulgari Mediterranean Reverie price-on-request necklace – its standout feature a royal blue 107,15-carat sapphire.

The Italian luxury house took to its Instagram account to promote their latest jewellery ahead of the event.

A red carpet exclusive. All eyes turn towards the Mediterranean Reverie necklace, a stunning piece from the new Bulgari Eden The Garden of Wonders High Jewelry collection.

Stealing the show: Anne, 39 and Julia (above) 54, made standout arrivals during the third day of the film festival

All smiles: Anne, a star in the evening’s screening of historical film Armageddon Time, debuted the elegant Bulgari Mediterranean Reverie necklace

‘A red carpet exclusive!’: The Italian luxury house took to its Instagram account to promote their latest jewellery ahead of the event

Sophisticated: It would appear the distinctive accessory had competition, as Pretty Woman star Julia wore a similarly extravagant yellow pendant

‘Showcasing the enchanting splendor of a unique stone — 107,15 dazzling carats of royal blue cushion cut sapphire from Sri Lanka — this extravagant creation will premiere in Cannes this evening. Stay tuned for a thrilling red carpet debut from one of Hollywood’s most elegant actresses.’

It would appear the distinctive accessory had competition, as Pretty Woman star Julia wore a similarly extravagant yellow pendant.

It wasn’t just the accessories that garnered attention, as Anne wowed in a very sophisticated white ensemble, which featured a bandeau, arm detailing forming a back bow, and a floor- length skirt.

Wow: It wasn’t just the accessories that garnered attention, as Anne wowed in a very sophisticated white ensemble

Arguably the most standout element of her get-up was the train – a perfect addition to garner attention as she stopped for photographs.

Leading lady Julia looked nothing short of sensational in a black Louis Vuitton jumpsuit and her Chopard jewellery as she flashed a wide grin for the cameras.

The ensemble, which she teamed with impressive black heels, was the perfect red carpet attire.

The film star looked in extremely high spirits, showing off her youthful visage with a minimal face of makeup.

Stylish: Leading lady Julia looked nothing short of sensational in a black Louis Vuitton jumpsuit and her Chopard jewellery as she flashed a wide grin for the cameras

Development on Armageddon Time was initially announced in 2019, when it was revealed that director James Gray would be writing and directing the feature.

The American period drama film is described as a coming-of-age story about growing up in Queens in the 1980s.

The film will be centred on the filmmaker’s experience at the Kew-Forest School in Queens, New York, where former president Donald Trump was an alumnus.

Crew: Development on Armageddon Time was initially announced in 2019, when it was revealed that director James Gray (centre) would be writing and directing the feature (from L-R: Anne, Jaylin Webb, director James Gray, Michael Banks Repeta and Jeremy Strong

Producer Rodrigo Teixeira previously spoke to Variety and briefly spoke about the inspiration behind the semi-autobiographical film.

‘It’s a personal story for James. You have the whole world of the Trumps dealing with that school and the students who go to that school,’ he said.

Teixeira added, ‘James is back in the independent world with this film.’

Also starring alongside Anne include Anthony Hopkins, Jeremy Strong, Michael Banks and Jaylin Webb.

Plot: The film will be centred on the filmmaker’s experience at the Kew-Forest School in Queens, New York, where former president Donald Trump was an alumnus