Fashion designer 22-year-old Petra Ecclestone – whose father is billionaire Formula One mogul Bernie Ecclestone, who is worth a cool $4 billion – married James Stunt at Odescalchi Castle in Italy on August 27, 2011. The wedding is thought to have cost around $7 million. Petra’s sister, 27-year-old Tamara Ecclestone, customized a bridal sweatsuit for her and her little sister and then tweeted her creation. Super cute and super inexpensive (even though I don’t think they really cared about the price!). You can customize your own. It’s fun, super easy and again, super cute!