Platinum is the color du jour with the catwalking crowd. Saskia de Brauw, Ashleigh Good, and Aymeline Valade have recently gone white, and others like Candice Swanepoel, Julia Nobis, and Juliana Schurig are lightening up. "My hair was white up until I was 10 or 11…the first time I got it [dyed platinum], my sister said, 'I feel like you're 4 again—you look like a baby!'" Schurig said backstage at Stella McCartney's Pre-Fall presentation earlier this week. As far as who can pull it off, hair colorist (and fellow white blond) Marie Robinson said: "Anyone…as long as their hair is healthy. Coarse, curly textures can become dry or brittle, so they should be kept shorter." The shade of platinum, however, should be based on your skin tone—bright hues look best on those who are dark or olive, a touch of pearl flatters fair-skinned women, and beige- and strawberry-tinged versions complement those with a peaches-and-cream complexion. Take note: This dye job is one that's best left to the pros. "Depending on length and darkness of hair, it can take an entire day," explained Robinson. "You should also ask about cost and what the maintenance will be upfront." And expect to retouch every four to six weeks at the minimum. Being blond may be more fun, but it's no cheap or easy date.