Stay slim with tequila and toothpaste, says Joan Collins

In a series of tweets, the 79-year-old actress has offered slimming tips including peppermint toothpaste to kill the appetite and drinking tequila instead of wine.

Collins' daily morsels of advice for her 100,000 followers began on January 8, starting with: "Some hot tips for losing those stubborn Xmas pounds, #1 best exercise