They were commissioned by the BBC to host "What Not to Wear" in 2001. The following year Woodall and Constantine released their second book, "What Not to Wear", which gained them a British Book Award and sold over 670,000 copies. The pair co-wrote 11 fashion advice books, several of which became best-sellers in the United Kingdom and the United States, and have now sold over 3 million copies worldwide. In 2003 they launched their shapewear range "Trinny & Susannah's Original Magic Knickers", which are sold in 30 countries around the world.