Seamstresses at Yves Saint Laurent's haute couture workshop were celebrating on Monday after a judge ruled in their favour in a legal row with billionaire Francois Pinault over the famous couture atelier's future. Pinault's holding firm, Artemis, had asked the appeal court to quash an earlier ruling in favour of YSL's works council after it took steps to sue it over claims it was purposely delaying a decision on the sale to French fashion giant SLPB.