Celia Imrie, 73, and Joan Collins, 93, look youthful as they put on a chic display at The Casting Directors luncheon in London

Dame Joan Collins, 93, reveals the secrets to her age-defying looks as she credits her 'very good genes', 'perfect' mental health and staying far away from cosmetic 'tweakments'

Jane Fonda, 88, And Joan Collins, 92, Rocked Cannes Film Festival In Timeless Style — Plus More Red Carpet Looks

Joan Collins' secrets to her youthful looks revealed: Dame, 92, eats an avocado every day, can still do the splits and swears she's never had Botox - after she wowed on the Cannes Film Festival red carpet