French label IRO has that Parisian chic thing down to a t... (A loose baggy tee.) Wear cool separates like sequin biker jackets, masculine tailoring, simple basic dresses and printed or leather trousers for a laidback, sports-influenced look.
I love the IRO Queeny Baseball Jacket, the latest black version of last season's navy blue sequined jacket I almost bought on several (half price) occasions... Tempting.