It's generally agreed that Kelly Rowland's carefully chosen high-end pieces have topped Tulisa's predictable mini dresses and odd laser-cut leather to win her the X Factor style war so far.

But this Sunday, we saw her take on another rival entirely. For the results show, Kelly wore a revealing plunge gown by Julien Macdonald, but she didn't pick from this season's offerings. Instead, her dress was from the Spring 2010 collection, which X Factor fashion fans are already more than familiar with.

Cheryl Cole picked from the collection more than once for her appearances on the show two years ago - and the particular style Kelly went for was also the influence behind the bodysuit that made up part of Cheryl's memorable 'Fight For This Love' outfit (custom designed by Macdonald). Talk about deja vu.

What's next? Tulisa inProject D?!