After heating up the Internet with photos of red-haired male beauties, photographer Thomas Knights launches a new book, Red Hot 100, and a 2015 calendar. The men featured in the calendar and book — including actors, models, and an Olympic gold medallist — will be on full display at the calendar's official launch party at the BOSI Contemporary Gallery in New York City on Sept. 7. (The exhibition runs from Sept. 3 to Sept. 14.) For those unable to check out his extensive collection in person, enjoy these exclusive images from the 2015 calendar.