Dannii and Cheryl's style showdown

It's 1992 and Dannii bears a passing resemblence to Madonna. We especially like the two-tone hair and the grinning man standing next to her Photograph: Patrick Riviere/Getty Images

We have to bear in mind that Dannii has had a few more years than Cheryl to make sartorial mistakes (this particular piece of art was taken in 1991). Even so, silver chaps and a Mr Blobby hat point to a serious error of judgment when picking a stylist Photograph: David Coe /Rex Features

A fairly simple green look which goes easy on the bling and hard on the 'Hollywood tape' Photograph: Dave Hogan/Getty Images

Hmmm, this fishnet number from 2003 doesn't leave much to the imagination. Nice tan though, Dannii Photograph: Tony Kyriacou/Rex Features

A more demure look from 2004 Photograph: Richard Young/Rex Features

Someone needs to tell Dannii that bling and baseball caps do not go together unless one is a rapper Photograph: Kristian Dowling/Getty Images AsiaPac

She gets it spot on in August 2008 with this polka-square dress and pretty pink pumps Photograph: Beretta/Sims/Rex Features

Wearing a dress by Victoria Beckham with a glittering panel of sequins across the hips, has Dannii now reached the dizzy heights of sartorial stardom? Photograph: Noel Kessel/Newspix / Rex Features

Now it's Cheryl's turn. On Popstars - The Rivals she looks more like she's about to audition for the school orchestra than Girls Aloud Photograph: Dave Hogan/Getty Images

Then she forgot the lesson that less is often, erm, less (appropriate, that is) Photograph: Mike Marsland/WireImage

Cheryl was rocking the 'boyfriend jean' back in 2004 - very fashion-forward Photograph: Jon Furniss/WireImage

That Ashley Cole has a lot to answer for - we're assuming it was his influence that made our Chezzer wear this horrific sheer top with a white bra underneath Photograph: Peter Macdiarmid/Getty Images

But in 2007, Cheryl somehow made the sheer look work in a whole different way with this high-waisted skirt Photograph: Eamonn McCormack/WireImage

On the X Factor, she was colour-blocking to great effect in November 2008 Photograph: Ken McKay/Rex Features

Here she appears at this year's X Factor auditions wearing one of the Guardian fashion desk's favourite designers: 3.1 Phillip Lim Photograph: Mark Campbell /Rex Features