Trinny Woodall and Susannah Constantine have struck a £1m book deal after their What Not to Wear title went to number one in the hardback bestseller list.
Publisher Weidenfeld & Nicholson is hoping the former Daily Telegraph fashion journalists, whose TV series has become one of BBC2's biggest hits, will remain stars for some time to come and have signed them up for three more books.
"It was unexpected that the book did so well, but we are all delighted," said a spokeswoman for Weidenfeld.
The book has already sold 292,254 copies, according to Nielsen BookScan figures, putting them ahead of celebrity chefs Jamie Oliver, Nigella Lawson and Delia Smith.
Weidenfeld said the new books would probably be published at the rate of one a year from 2003 to 2005, guaranteeing Woodall and Constantine's positions as the nation's style gurus for at least the next few years.
The deal propels the pair, who met 15 years ago at a dinner party hosted by Constantine's former boyfriend Viscount Linley, into the big league of book publishing.
Oliver, Lawson and Smith have made fortunes from the sales of cookery books based on their TV series. But until now there have been no equivalent guides to sartorial elegance.
But the 11-part TV series of What Not to Wear had millions of viewers tuning in to marvel at the rude comments the makeover queens make about their clients.
After the pair demanded he ditch his trademark jeans earlier this year, Jeremy Clarkson said: "I couldn't believe it. They said all my clothes were rubbish and that my legs were too long. How can legs be too long? And how can a pair of Levi's be rubbish?"
He went on to brand Constantine's Rover 75 the equivalent of a "vicar's elbow patch".
Others who have come in for frank wardrobe advice include Lesley Joseph and Ulrika Jonsson, who was told by the duo she was wearing her frock the wrong way around at the National TV Awards in October.
Woodall and Constantine turned themselves into TV style experts following the collapse of an internet venture, Ready2Shop.com, when the dotcom bubble burst.
Although the venture faltered, the pair proved they had a unshakeable knack for self-promotion.
To promote the site they posed naked from the waist up with only melons (Constantine) and fried eggs (Woodall) covering their chests.
