The clothing chain said that it expects results for the year to be significantly below market expectations.
It warned that pre-tax profit is likely to be down by 15% on last year, as sales for the three months since the beginning of August were down by 18%. French Connection, famous for sticking its FCUK logo on almost every item imaginable, said that the winter range had not been "significantly attractive" to consumers.
It added that the introduction of a final winter collection had not improved the sales trend.
In August, the company revealed that its new advertising campaign, created by Trevor Beattie and TBWA\London, would not feature the FCUK logo. Instead, the spot asks viewers "Don't you just hate being influenced by the great big offensive logo at the end?" before finishing with a blank screen.
This strategy has also seen a series of store windows where the mannequins have their finger across their lips in a "ssh" sign, and the words "don't make us say it". French Connection is also trying out an unbranded store, which launched in Notting Hill earlier this month.
Shares in the company plummeted by almost 20% today after the trading update was issued, down 60p to trade at 245.25p.
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