Lindsey Vonn led the tributes to the 19-month-old daughter of former United States Olympic skier Bode Miller, who died on Sunday.

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Tragedy for Miller family

Emmy Miller is reported to have drowned after falling into a swimming pool during a party attended by Miller and his wife Morgan – who is pregnant with the couple's third child – on Saturday evening.

She was taken to hospital by paramedics, but later passed away.

Miller, a six-time Olympic medallist including a gold at the 2010 Winter Games, posted on Instagram to confirm the tragic news.

"We are beyond devastated. Our baby girl, Emmy, passed away yesterday," he wrote. 

"Never in a million years did we think we would experience a pain like this. Her love, her light, her spirit will never be forgotten. 

"Our little girl loved life and lived it to its fullest every day. Our family respectfully requests privacy during this painful time."

Skiing great Vonn offered her support, writing on Twitter: "Devastating news. My deepest condolences to you and your family @MillerBode."

The U.S. Ski and Snowboard Team, and the U.S. Olympic Team also posted messages to Miller.