Her credentials may only stretch to a perennially slim figure and having a ready opinion on almost anything, but that hasn’t stopped Joan Collins dishing out her own brand of diet advice to fans.

In a series of tweets, the 79-year-old actress has offered slimming tips ranging from the tongue-in-cheek to the frankly bizarre.

Collins’s daily morsels of advice for her 100 000 followers began on January 8 with: “Some hot tips for losing those stubborn Xmas pounds, #1 best exercise – push yourself away from the dining table. More tomorrow.”

Since then she has recommended eating nothing but eggs one day a week, brushing your teeth with peppermint toothpaste to quash hunger pangs and drinking tequila instead of wine.

Unfortunately, not all of the Dynasty star’s suggestions have been met with the respect she may feel they deserve. One fan wrote: “I take the seafood diet: when I see food, I eat.” And in response to her advice to eat from smaller plates, another quipped: “Have you tried dolly cutlery Joan? Fools your brain into thinking you’re having a full meal.”

But dietary experts said some of her tips made sense.