Olympic Gold Medalists Lindsay Won and P.K.
Former skiing champion Vaughn announced her engagement to the NHL star on Instagram on Friday. The couple has been dating for at least one year.
34-year-old Vaughn told Vogue that they don't have a wedding date yet.
"I just want to enjoy the moment and my engagement," Vonn told Vogue. "We're not in a hurry to get married. It depends on his schedule and when we have time to sit and go through it. I don't want to stress him out because there's a great season coming."
Vaughn retires from skiing in February, citing constant pain in both knees. She won Olympic gold for the United States in the 2010 women's dive in Vancouver. This year, she also won bronze in the Super-G and another bronze last year at Pyeongchang Games.
The 30-year-old Subban won a gold medal when Canada won the Sochi Men's Hockey Competition in 2014, although it was scratched in all but one game. In June, the New Jersey Devils acquired Subban in the Nashville predator trade.
Vonn was previously a Tiger Woods golfer for almost three years before the couple split in 2015.