Okamoto has modeled for Alexander McQueen, Alexander Wang, Burberry Prorsum, Bottega Veneta, Chanel, Dolce & Gabbana, Donna Karan, Emanuel Ungaro, Fendi, Giorgio Armani, Givenchy, Hermès, Jean-Paul Gaultier, Kenzo, Louis Vuitton, Marc Jacobs, Maison Martin Margiela, Max Mara, Miu Miu, Moschino, Paul Smith, Phillip Lim, Ralph Lauren, Salvatore Ferragamo, Tommy Hilfiger, Vivienne Westwood, Yves Saint Laurent and more.