With their matching gowns, kohled eyes and red lipstick, they could easily be mistaken for sisters.

On closer inspection, however, the striking duo in question is Demi Moore and her 19-year-old daughter Rumer Willis.

The pair stepped out in Beverly Hills last night having clearly synchronised their red carpet looks.

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Like mother, like daughter: Demi Moore and 19-year-old daughter Rumer Willis appeared at an event in Beverly Hills last night looking very similar, having clearly synchronised their outfits

It marked a personal triumph for aspiring actress Rumer, who has endured a tough time on the subject of her looks.

Over the past couple of years, she has been subjected to a litany of disparaging comments, particularly from internet critics, regarding her appearance.

But last night her glamorous appearance was hard to fault as she made a stunning turn on the red carpet alongside mother Demi and stepfather Ashton Kutcher, 30.

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Double act: The 45-year-old star and her daughter wore similar flowing gowns, kohled eyes, and a slash of red lipstick as they co-ordinated their looks

A proud Demi, who has two other children with Willis, 16-year-old Scout LaRue and Tallulah Belle, 14 wrapped a supportive arm around her eldest daughter.

She and Rumer were joined at the party by husband Ashton, who attracted considerably less attention for his dubious fashion choice of a skin-tight white suit and trilby hat.

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Flamboyant: Meanwhile Ashton's white suit and trilby look left a little to be desired as he stepped out next to his glamorous wife

Meanwhile, it emerged today that Demi and Ashton are at the centre of a health scare following a report that a waitress at Ashton's 30th birthday party tested positive for hepatitis A.

According to Star magazine, a source at the New York Board of Health has said that celebrities who attended the party on 7 February at New York club Socialista should submit to testing for the virus.

A-list guests at the function who could be affected include Madonna, Kate Hudson, Demi's ex-husband Bruce Willis and Gwyneth Paltrow.

Other celebrities who attended were Salma Hayek and her husband, Ivanka Trump, stylist Rachel Zoe, and designer Roberto Cavalli.

A source at the New York Board of Health told America's Star magazine: "A report will go out tomorrow that everyone who was at the club at Feb. 7, 8 and 11 will need to be tested," says the source.

Clubgoers have been asked to return for a health screening today.