Yes, Hailey Bieber and I share the same taste in denim trends. We also style our jeans on the same schedule, rotating between vintage Levi's and a best-selling pair from Gap. Perhaps our shopping agendas will sync this Amazon Prime Day, too: Her exact Gap jeans are over 50-percent off right now. Bieber's preferred pair—the 90's Low Rise Loose Jeans—are already wallet-friendly to begin with. Their hip-hugging yet loose wide-legs usually retail fo…