We'd wear them even if it didn't mean getting close to Colin Firth. Scarlett Johansson's baubles in ''Girl With a Pearl Earring'' aren't just for the 17th century. ''More designers are using pearls,'' says Robert Artelt of Mikimoto, whose modern version was inspired by the film. ''You'd think [young buyers] would go for something more trendy. But they love the classic design.''