Serena Williams, Jessica Chastain cheer on Simone Biles: See celebrities at Olympics

While all eyes are on France as the 2024 Paris Olympic Games are underway, celebrities are enjoying the festivities.

Since the summer games officially kicked off Friday with the opening ceremony, stars such as Natalie Portman, Tom Cruise, John Legend, Chrissy Teigen and Ariana Grande have been spotted attending various Olympics events.

Celebrities were in the stands cheering on Team USA (or maybe in Nicole Kidman and husband Keith Urban's case, Team Australia) in gymnastics, boxing, swimming and more events.

The Olympic Games will last 16 days, and there will be many opportunities for celebrities to weigh in on the action from home and at various sporting events.

Here are some highlights from the star power brought to the 2024 Paris Olympics.

Jessica Chastain goes on rare outing with children Giulietta and Augustus

The women's gymnastics qualification was fun for the whole family as Jessica Chastain was joined in the stands by husband Gian Luca Passi de Preposulo, daughter Giulietta, 6, and son Augustus, who was born in 2020.

"The Eyes of Tammy Faye" star was all-in on Team USA with her sweater, which was decorated with an American flag and Olympic rings. Augustus complemented her look with a T-shirt that was emblazoned with "USA."

Serena Williams, Nicole Kidman catch Simone Biles and Team USA gymnastics

Simone Biles and Team USA took the floor – and the gold! – during the women's gymnastics finals on Tuesday. Of course, this was a star-studded affair as fans were eager to see the most decorated gymnast in history.

Fellow GOAT Serena Williams was seen in the stands, looking on while sitting next to Tony Estanguet, president of the Paris Olympics organizing committee.

Elsewhere in the audience, Kidman and Urban, Spike Lee and Portman watched as Team USA set out for its first gold medal since the 2016 Olympic Games in Rio.

Olympic gymnastics: Simone Biles, USA results and scores from team final

Snoop Dogg goes for gold in Olympics commentary

Snoop Dogg's Olympic broadcasting future is bright, as the rapper goes for gold as Olympic commentator and No. 1 Team USA cheerleader with his must-see appearances with "Primetime" host Mike Tirico.

The "Drop It Like It's Hot" rapper has done everything from plunging into a pool lesson with 23-time gold medal winner Michael Phelps to crying at "The Star-Spangled Banner" and showing Biles love by placing the famed Olympian's face on his T-shirt.

Snoop Dogg's winning NBC Olympics commentary is pure gold

Ce?line Dion dazzles on the Eiffel Tower

Days after Céline Dion sparked speculation about a possible opening ceremony performance with her arrival in Paris, the French Canadian singer closed out the event Friday night with a majestic comeback to live performing.

Singing from the Eiffel Tower with a piano accompaniment, Dion delivered a sweeping rendition of édith Piaf's "L’Hymne à l’amour" that ended with a dazzling light show on the iconic monument.

This marked Dion's first public performance in around four years, since before she canceled her Courage World Tour following COVID-19 and health-related delays. In late 2022, she revealed in an emotional Instagram video that she had been diagnosed with stiff-person syndrome, a rare neurological disorder that causes her to experience muscle spasms.

Read more: Céline Dion's dazzling Olympics performance renders Kelly Clarkson speechless

Lady Gaga performs in French during opening ceremony

Mother Monster showed off her vocal chops en fran?ais during the opening ceremony, performing Zizi Jeanmaire's "Mon Truc En Plumes."

Dressed in House of Dior, Lady Gaga danced and played the piano along the Seine in a French-inspired set. Due to safety concerns amid the rain, Gaga's performance was pre-recorded and aired during the live program.

"Although I am not a French artist, I have always felt a very special connection with French people and singing French music," Gaga posted on X after the performance. "I wanted nothing more than to create a performance that would warm the heart of France, celebrate French art and music, and on such a momentous occasion remind everyone of one of the most magical cities on earth — Paris."

Rosali?a and Jeremy Allen White celebrate on the eve of the opening ceremony

"Motomami" songstress Rosali?a and "The Bear" star Jeremy Allen White, who have been linked together since late last year, were both in attendance at a prelude to the 2024 Olympics event on the eve of the Opening Ceremony.

The Spanish singer, who was a co-chair alongside Charlize Theron, Serena Williams and actor Omar Sy, stunned at the Foundation Louis Vuitton museum and cultural center in a 2025 Christian Dior floor-length sheer lace gown. White also rocked up to the event in an all-black Louis Vuitton ensemble.

The duo, who have not publicly confirmed their relationship, showed their playful sides inside the event as White focused on winning a prize at a claw machine. In a video posted on Vogue's Instagram, Rosali?a is seen watching White angle for one of the mini soccer and basketballs and celebrating his winnings.

Prelude to the Olympics Sophia Bush, Zendaya, more looks from the Louis Vuitton event

Chrissy Teigen and John Legend bring children Miles and Luna

Though it was a rainy affair in the City of Lights, the athletes' excitement couldn't be dimmed as they celebrated on boats that cruised down the Seine River as part of a nearly 100-boat flotilla. Not everyone was on board for the inclement weather, however.

"Absolutely beautiful opening ceremonies," Teigen said in an Instagram story posted as the ceremony was underway. "I will say, they should have been speed boats. We got to, what? Bolivia? before we left."

Teigen's hair was visibly wet, and she appeared to be inside a car. Legend, her husband, chimed in off-camera: "We got to China, actually; that was the last one."

Teigen and Legend made their Olympics appearance a family affair as they brought son Miles, 6, and daughter Luna, 8, to the opening ceremony.

However, it appears the Teigen-Legend brood didn't stick around for the hours-long event to conclude, as the rain forced them to find a getaway car.

After some back-and-forth in Teigen's Instagram story, they revealed they'd made it as far as the Chinese delegation's boat before they made their escape.

Hoda Kotb snaps rain-soaked selfie with Tom Cruise

World-class athletes are the stars of the Olympics, but Hoda Kotb was starstruck by a cinematic hero.

The "Today" show host revealed Friday that she met Cruise while attending the sporting event. She shared a selfie of the two, in which Kotb wore a poncho while Cruise smiled for the camera with rain-slicked hair.

"Do you know when you dream of meeting Tom Cruise… And then it finally happens," Kotb wrote on Instagram.

Kotb's "Today" colleagues shared in the TV personality's joy. "Icons only ??," co-host Savannah Guthrie commented.

Contributing: Edward Segarra and Bryan Alexander

This article originally appeared on USA TODAY: Paris 2024 Olympics: Jessica Chastain cheers on Simone Biles