Despite having tried every fad diet going, Edina is still desperate to be thin – all she wants is to be able to take off her clothes and not be marked by them. The answer is detox.

Spurred on by a “Sex and the City”-style lunch with her bitchy girlfriends, Edina embarks on a strict regime of water and red meat, and enrolls herself in a grueling British Military fitness program.

Despite Patsy‘s best efforts, Eddy eschews champagne and begins to shed the pounds… But her nights are plagued by dreams of visits from God (Marianne Faithful) and the Devil (Anita Pallenberg), who have their own agendas.

Meanwhile, budding playwright Saffy bumps into a pretentious old school friend, Taylor (Julian Rhind-Tutt), who attempts to use her in his bid to further his acting career, and Patsy decides to see what life is like without her trademark ’60s forelock.

“Donkey” also stars Helen Lederer as Catriona, Harriet Thorpe as Fleur, Tilly Blackwood as Lady Candy, Andrea Gillie as Patsy’s PA and Jessica Willcocks as Minge.