The Australian actress, 53, looked chic in her one-shoulder ensemble as she joined Julianne Moore, 61, and pregnant Jessica Brown Findlay, 32, on the final day of the event.
The closing ceremony also served as a premiere for the upcoming noir thriller, The Hanging Sun, in which Jessica stars as one of the main characters.
Cate showed off her tiny waist in the fitted floor-length number in a flowing A-line skirt and finished off with a chiffon cape.
She wore her blonde locks in a chic updo and chose to accessorize her look with an array of chunky silver jewellery.
Julianne opted for a voluminous off-the-shoulder neckline, with her red hair pulled into a sleek low bun.
Radiant: Cate wore her blonde locks in a sleek updo and chose to accessorise her look with a range of chunky silver jewelery
Glamourous: Cate showed off her tiny midriff in the fitted number which fell to the floor in a flowing A-line skirt
Meanwhile, Jessica flaunted her blossoming baby bump in a structured strapless black dress with shimmering details and matching heels as she graced the red carpet.
The actress, who played Lady Sybil in Downton Abbey, hugged her baby as she attended the closing ceremony and announced the news she is expecting with husband Ziggy Heath.
She wore her brunette locks in a straight style and opted for a soft bright red lipstick to add a pop of color to her look, completing her outfit with long PVC gloves.
Glamorous: Julianne opted for a voluminous number which featured an off-the-shoulder neckline
Chic: The actress wore her red hair pulled into a sleek low bun
Glowing: Julianne glowed as she stepped out at the event, adding a pop of eyeshadow to complete her look
Elsewhere, American actress Tessa Thompson wore a quirky white mini dress with knee-high stockings and a voluminous asymmetrical train.
The Venice Film Festival is the oldest in the world and was first established in 1932, celebrating filmmaking from around the world.
Attracting the biggest stars it takes place every year on Lido Island in the Venetian Lagoon.
Stunning: Meanwhile, Jessica flaunts her blossoming baby bump in a structured strapless black dress with shimmering details
Congratulations: The actress, who played Lady Sybil in Downton Abbey, hugged her baby as she attended the closing ceremony and announced the news she is expecting with husband Ziggy Heath
Mourning: During the final day of the festival, attendees wore black as they mourned Queen Elizabeth II after she died “peacefully” at Balmoral on Thursday aged 96
During the final day of the festival, attendees wore black as they mourned Queen Elizabeth II after she died “peacefully” at Balmoral on Thursday aged 96.
All of Her Majesty’s children had been rushed to Balmoral after doctors became “worried” about her health. Hours later she died, surrounded by her family.
At 6.30 pm on Thursday, her death was confirmed. A Buckingham Palace spokesman said: “The Queen passed away peacefully at Balmoral this afternoon.”
Couple: Cate was later joined by husband Andrew Upton, who opted for a smart navy suit with a cream hat
Sweet: The duo shared a laugh as they graced the red carpet
Alternatively: Elsewhere, US actress Tessa Thompson wore a quirky white mini dress with knee-high stockings and a voluminous asymmetrical train
Stylish: Swedish model Elsa Hosk also opted for all black as she wore an edgy leather dress
“The King and Queen will remain at Balmoral this evening and return to London tomorrow.”
The Queen’s death will send Britain and its Commonwealth realms into a ten-day period of mourning as millions of her subjects in the UK and abroad come to terms with her death.
There will also be a celebration of her historic 70-year reign which saw her reach her Platinum Jubilee this year – a milestone unlikely to be reached by a British monarch again.
Cute: Kate looked stunning as she posed for pictures at the event
Beautiful: Kate showed off her incredible skin enhancing look with very subtle make-up
Charles, the King, said: “The death of my beloved mother, Her Majesty the Queen, is a moment of greatest sorrow to me and all the members of my family.
“We deeply mourn the death of a beloved sovereign and a much-loved mother. I know her loss will be deeply felt across the country, the Kingdoms and the Commonwealth, and by countless people around the world.
“During this time of mourning and change, my family and I will be comforted and sustained by our knowledge of the respect and deep affection in which the Queen was so widely held.”
Adorable: Italian actor Alessandro Borghi, who stars in The Hanging Sun, turned heads in a floral suit as he put on a loved-up show with Irene Forti
Favorite: Festival host Rocio Munoz Morales slipped into a velvet number as she hugged her partner Raoul Bova
