Stephanie Beacham looking glamorous in a Suzanne Neville dress on the new Snickers advert.

Joan Collins and Stephanie Beacham, the diva stars of Dynasty, will appear together on screen again, more than 20 years after their bitter rivalry made them household names in a new advert for Snickers.

The pair will reprise their highly-strung and dramatic characters for the first time since the actresses starred in the show. Miss Collins, 78, and Miss Beacham, 64, will go head to head for a TV advert for the chocolate bar Snickers.

Dressed in a glamorous gown by Suzanne Neville and dripping with jewellery, Stephanie Beacham plays out her famous diva behaviour in the dressing room of a football club. Miss Beacham, who took part in the BBC’s Strictly Come Dancing in 2007, will throw a tantrum about being substituted during a match and after taking the chocolate bar, Joan Collins transforms into a footballer with the new slogan: “You’re not you when you’re hungry.”

To see other dresses by Suzanne Neville in her evening wear collection: Suzanne Neville Evening Wear Dresses