Yesterday, Sofia Richie went for a stroll on the seaside in Malibu and confirmed off her hot ass in a revealing bikini. Sofia Richie is a 21-year-old model, regardless of her younger age, she already has greater than 6 million followers on instagram and works with manufacturers similar to Madonna’s clothes line “Materials Woman”, Chanel, Dolce & Gabbana, Adidas, Michael Kors and Tommy Hilfiger.