The ceremony in Milan showcased Italy’s rich cultural heritage, with a nod to late fashion giant Giorgio Armani.
An otherwise harmonious event was punctuated by loud boos from the crowd when US Vice-President JD Vance appeared on the big screen at the San Siro stadium.
But the US team received loud applause from spectators as they began their parade.
There has been anger in Italy over the presence of agents from the US immigration enforcement agency ICE as part of security for the American delegation, even though the Italian Government has said the agents will not have any operational role on its soil.
Performers at the San Siro show wore outsized heads of the three great masters of Italian opera – Giuseppe Verdi, Giacomo Puccini and Gioachino Rossini while American diva Mariah Carey, in a white sequined dress with feathers, sang Volare in Italian and Nothing is Impossible.
Italian tenor Andrea Bocelli got a rapturous reception after performing Nessun Dorma and dozens of models honoured Armani by streaming across the stage wearing red, green and white trouser suits.
Italian President Sergio Mattarella declared the Games open after International Olympic Committee chief Kirsty Coventry told the competitors: “You remind us that we can be brave, that we can be kind, that we can get back up, no matter how hard we fall.”
In a first, 2900 athletes paraded in the venues closest to where they will compete in the February 6-22 Games, in a bid to minimise travel.
Remarkable Vonn
In the hours before the ceremony, Lindsey Vonn, the biggest star at the Milan-Cortina Olympics, passed a crucial test of her injured knee.
The American skier successfully completed her first training run for the women’s downhill event, despite a ruptured anterior cruciate ligament.
It kept alive the 41-year-old’s hopes of medal glory in Italy.
Vonn won her only Olympic gold at the Vancouver Games, 16 years ago, but also has two bronze medals.
A top-three placing in the final on Sunday local time would cap a remarkable comeback from retirement that has been elevated to extraordinary by the injury she suffered in a pre-Olympics race.
Wearing a knee brace, Vonn completed the run at Cortina without apparent difficulty.
Before skiing, she posted on Instagram: “Nothing makes me happier! No one would have believed I would be here... but I made it!!... I’m not going to waste this chance.”
Asked by reporters after the run if everything was “all good”, Vonn responded simply “yeah”.
Competitive action in the figure skating began, with defending champions the United States taking an early lead in the team event thanks to world champion ice dancers Madison Chock and Evan Bates.
The men’s downhill race, one of the prestige events, kicks off the first full day of action on Saturday local time.
China’s freestyle skier Eileen Gu, one of the faces of the 2022 Games in Beijing, launches her bid for triple gold as the women’s slopestyle gets underway at Livigno Snow Park.
– Agence France-Presse