Demi Moore, 61, looks sensational in a chainmail gown with black underwear as she joins Rosie Huntington-Whiteley and Lily James to celebrate Dolce & Gabbana's 40th anniversary in Milan

Demi Moore looked sensational in a chainmail gown as she led the stars celebrating Dolce & Gabbana's 40th anniversary in Milan on Saturday. 

The actress, 61, was joined by Rosie Huntington-Whiteley, 36, and Lily James, 35, for the opening night of the brand's exhibition at Palazzo Reale. 

Stepping out in Italy's fashion capital, Demi teamed the glittering sheer number with a black bra and matching high waisted bottoms. 

She styled her hair straight and elevated her height with a pair of strappy sandals to complete her look. 

Rosie also embraced the brands love of lingerie and wore a black chiffon gown with a plunging neckline. 

The slip dress featured corset-style panelling and was teamed with suspenders, lace stockings and black underwear. 

Lily opted for a two-piece consisting of a sheer halterneck top and black wide leg trousers.  

Speaking to Financial Times ahead of the exhibition opening the brand’s founders and co-owners, Domenico Dolce and Stefano Gabbana explained how they hope to tell the story of 'where they had come from.'

Stefano said: 'Our dream is to inspire the new generations, to encourage them to express what they feel, and give them courage.'

Domenico added: 'We would like young people to see in the artistic professions an alternative, an antidote to banality and homogenisation. 

'And if this project leads them to marvel at the creativity and craftsmanship that are contained not only in the final product, but in the entire process, we will feel truly happy.' 

Demi's outing comes amid ex husband Bruce Willis' dementia and aphasia battle. 

Since the Die Hard star's devastating diagnosis, his adoring family have rallied around him.

Bruce, 69, married the actress in 1987 but the pair separated in 2000. As Demi found love with younger actor Ashton Kutcher, 46, (who she split from 2011), Bruce later fell for English model and actress Emma Heming, who is almost 25 years his junior.

But Bruce, Demi and Emma were determined to remain friends for the sake of their children and the couples became close.

'We've become like a tribe,' Bruce said of their blended family while speaking with W Magazine in 2009, after Ashton and Demi attended his Turks and Caicos wedding to Emma.    

Bruce has previously noted that people are often baffled by his friendship with Demi - with whom he shares children Rumer, 35, Scout, 32 and Tallulah, 30. 

'It's generated a lot of interest because everyone can understand resentment and envy in the breakup of a marriage, but they don't understand how I can get along with my ex like that,' he said.

'Demi and I made a choice to put the kids first, and we're really lucky that it turns out we all have fun together.' 

Demi and Ashton ended up splitting in 2011, and they finalised their divorce two years later. 

Meanwhile, Bruce and Emma went on to welcome their daughter Mabel in 2012. Two years later, they had Evelyn.

Bruce celebrated his 69th birthday in March, surrounded by his family, including ex-wife Demi.

The actress took to Instagram sharing two new snaps - one with her and Bruce having a chat and another with Bruce playing with his granddaughter Louetta, the first child of his daughter Rumer. 

Demi also shared an undated throwback snap of Bruce with all three of his daughters - Rumer, Tallulah and Scout.

She captioned, 'Happy Birthday, BW! We love you and are so grateful for you.'