Trinny London (founded by fashion and beauty maverick Trinny Woodall) has been churning out cult products for some time now. There’s the ‘miracle-working’ lip and line filler that sells one every 25 seconds, the ‘skin-perfecting’ BFF Cream , which has become the brand’s top-selling product, and not forgetting the genius stackable containers the make-up products come in to create mini handbag-sized make-up kits.