Sarah Ferguson dazzles in £4,750 Vivienna Lorikeet gown as she poses with Victoria's Secret model and film producer at Knights Of Charity gala

Sarah Ferguson dazzled in £4,750 sparking gown at Knights Of Charity gala during the 77th Cannes Film Festival.

The Duchess of York, 64, oozed glamour as she posed on the blue carpet in the show stopping Vivienna Lorikeet Juno gown on Wednesday evening.

The elegant green ensemble featured sequin fabric, a fringed top and a mermaid style skirt, she completed the chic look with diamond hoop earrings. 

Fergie swept her signature red hair back from her face and sported a gold bracelet emblazoned with the name of one of her daughters, Princess Eugenie. 

The Duchess looked well after a series of health woes, she appeared in great spirits as she beamed for snaps with Brazilian fashion model Isabeli Fontana and movie producer Milutin G. Gatsby.

Sarah Ferguson dazzled in £4,750 sparking gown at Knights Of Charity gala during the 77th Cannes Film Festival 

Elsewhere Sarah was spotted in a warm embrace with her former flame Manuel Fernandez.

Meanwhile Isabeli, 40, slipped into a strapless white gown that hugged her curves, before flaring out into a black mermaid style skirt 

Her breathtaking dress also featured sparkly gold panelling across the bodice and she showcased her youthful beauty with a light palette of subtle makeup, to accentuate her natural features.

Sarah and Manuel reportedly split in March 2016 after the internet entrepreneur ended it with the Duchess.

The mother of Princesses Eugenie and Beatrice was reported to have been dating the half-Irish half-Spanish businessman since being introduced by a mutual friend in early 2014 and, despite the eight-year age gap, insiders say she was 'besotted' with him.

Despite their apparent break-up the pair appear to have remained friends having been spotted at several events together throughout the years. 

It comes after the Duchess revealed that she was diagnosed with skin cancer in January, just months after having a mastectomy for breast cancer. 

The mother-of-two had a number of moles removed while undergoing breast reconstruction surgery last year, one of which was found to be malignant.

The Duchess looked well after a series of health woes, she appeared in great spirits as she beamed for snaps with Brazilian fashion model Isabeli Fontana

Sarah posed up a storm as she beamed on the blue carpet with movie producer Milutin G. Gatsby

The Duchess of York , 64, oozed glamour as she posed on the blue carpet in the show stopping Vivienna Lorikeet Juno gown on Wednesday evening

Fergie swept her signature red hair back from her face and sported a gold bracelet emblazoned with the name of one of her daughters, Princess Eugenie 

The duchess was described as being in 'good spirits' after the 'distressing' news, which was broken to her just days after Christmas.

A melanoma is a type of skin cancer that can spread to other areas of the body, mainly caused by exposure to ultraviolet light from the sun or sunbeds.

People with paler skin, a large number of moles and family history of skin cancer tend to be more at risk of developing this.

Friends at the time said Fergie is the 'most resilient' person they know and was already planning to pick up her television career again soon to encourage others to get themselves checked out.

One friend told the Mail that the duchess had been informed she would need 'further investigations' to make sure it has been caught at the early stages.

The elegant green ensemble featured sequin fabric, a fringed top and a mermaid style skirt, she completed the chic look with diamond hoop earrings

Meanwhile Isabeli, 40, slipped into a strapless white gown that hugged her curves, before flaring out into a black mermaid style skirt

Elsewhere Sarah was spotted in a warm embrace with her former flame Manuel Fernandez

'Everyone is hoping this is the case and the doctors are hopeful they have got it early, but melanoma is aggressive and they need to double check everything,' they said.

They added of Sarah: 'She's very resilient and she does bounce back from things quite quickly but two diagnoses of cancer in six months, particularly when she thought she had just got over the breast cancer, is a lot for anyone to deal with and process.

'You hope you've beaten it and then get something like this.

'That's why she wanted to take herself off to Austria for a couple of weeks, to get her head around everything. She's back home now and the family have been very supportive.'

They also praised 'her girls' - Princess Beatrice and Princess Eugenie - who they said have been 'fantastic over the last six months'.

'They really have been brilliant over her breast cancer diagnosis. And they are already rallying around her,' they said.

But in recent weeks, she's been increasing her public appearances, even travelling as far as Samoa to visit women's leadership groups last month.