Kelly Clarkson looks slender in a white dress on Tonight Show after losing 40lbs as she is joined by Peyton Manning to talk hosting Olympic Games

Singer Kelly Clarkson looked slender on The Tonight Show with Jimmy Fallon on Tuesday evening.

The 41-year-old Stronger hitmaker wore a slim-fit white dress that highlighted her small waistline and thin arms as it ended just below the knee as she added white pointy pumps.

Clarkson lost 40lbs last year after going on a high protein, low carb diet, and also walking in her new hometown of New York City.

The siren talked about her weight loss this year, saying her doctor wanted her to drop weight so she would not get pre-diabetes.

The talk show host was with Peyton Manning and Mike Tirico as the three are working on the Olympic Games in Paris in July.

Singer Kelly Clarkson looked slender on The Tonight Show with Jimmy Fallon on Tuesday evening

The Stronger hitmaker wore a slim-fit white dress that highlighted her small waistline and thin arms as it ended just below the knee as she added white pointy pumps

Kelly's career is doing better than ever. 

Her latest album Chemistry is a hit and was nominated for Grammys. 

And her talk show landed six wins at the Daytime Emmy Awards — including outstanding daytime talk series and host for Clarkson. 

Then there is the Vegas residency, which added more shows through the winter.

Earlier this year Kelly came clean about what she did to lose a drastic amount of weight this summer amid speculation from fans that she was on Ozempic. 

The pop star said in her People magazine cover story that she made two big lifestyle changes.

Firstly, the Since U Been Gone singer revealed that she decided to walk everywhere in her new home of New York City which has helped her get the exercise she needed.

Before Manhattan, she resided in Los Angeles where she drove her car everywhere, limiting her daily steps.

Secondly, The Voice star revealed that she decided to listen to her doctor, taking on the advice to cut down on carbs and put herself on a protein heavy diet.

The country music favorite pulled a funny face as she wore hoop earrings

The talk show host was with Peyton Manning and Mike Tirico as the three are working on the Olympic Games in Paris in July

She told the publication she loves to stroll around her neighborhood and putting in the steps have been great for her waistline.

Clarkson also takes her kids River Rose, nine, and son Remington Alexander, seven - dad is her ex-husband Brandon Blackstock - with her.

'We go walk the dogs a few times at the park. We'll go for ice cream because my daughter will wear me down. We'll go make slime and we go to the museum,' she said.

'Walking in the city is quite the workout. And I'm really into infrared saunas right now. And I just got a cold plunge because everybody wore me down,' Kelly added.

Clarkson lost 40lbs last year after going on a high protein, low carb diet, and also walking in her new hometown of New York City. The siren talked about her weight loss this year, saying her doctor wanted her to drop weight so she would not get pre- diabetes

Seen with her Olympic co-hosts and Fallon

The star seems to be happy than ever after divorcing Brandon Blackstock, 47

And what she puts on her plate is different.

'I eat a healthy mix. I dropped weight because I've been listening to my doctor — a couple years I didn't,' explained the talk show host.

'And 90 percent of the time I'm really good at it because a protein diet is good for me anyway. I'm a Texas girl, so I like meat — sorry, vegetarians in the world!'

She looked much thinner at the start of the fall when she went back to her talk show' the set was now in NYC and not LA. At the time she said the weight change was due to 'healthier choices.'

Meanwhile, she is looking forward to her Olympic hosting duties.

Clarkson has finally come clean about what she did to lose a drastic amount of weight this summer

The star at the 2007 Teen Choice Awards at the Gibson Amphitheater in LA

The first night of the quadrennial, major international multi-sport event will air live on NBC and Peacock on July 26 at noon ET.

'I'm extremely honored to have a front row seat,' said Manning, a Pro Football Hall of Famer who won two Super Bowls during his 18 seasons in the NFL. He is now the co-host of 'Monday Night Football with Peyton and Eli' with his brother and former NFL quarterback Eli Manning.

Clarkson hosted the NFL Honors last year.

'Kelly and I are both fans of the athletes and the opening ceremony of years past,' Manning told The Associated Press in an interview on Tuesday. 'I think there'll be a lot of emotions for these athletes. I look forward to finding out those stories between now and July and maybe sharing that with the audience.'

Manning said he'll be stepping out his comfort zone of usually talking football, but Tirico believes he and Clarkson will do just fine. The trio will be positioned at the Trocadero near the ceremony's finish with views of the Seine River and Eiffel Tower.

'Our goal and desire is for Peyton and Kelly to be Peyton and Kelly. Just be who they are,' said Tirico, who will host his fourth opening ceremony. 'So many people have come to know, love and trust these two. Having them there as part of this really speaks to what this event is. It's under the umbrella of sports. The gathering is because of sports. But it's really a cultural celebration.'

Organizers said the opening ceremony of the Olympics along the Seine will be held during sunset. It's the first time an Olympic opening ceremony will be held outside a stadium setting, in line with the Paris organizers' motto: 'Games Wide Open.'

About 10,500 athletes will parade through the heart of the French capital on boats on the Seine along a 6-kilometer (3.7-mile) route.

'Today' show hosts Savannah Guthrie and Hoda Kotb will also cover the event live from Paris

'Today' show hosts Savannah Guthrie and Hoda Kotb will be stationed together on a bridge along the route. They're expected to report on the pageantry of the ceremony as the athletes sail by.

Molly Solomon, executive producer and president of NBC Olympics Production, said each host will bring the best out of each other. She called them a 'compelling combination.'

'I'm excited about this whole team,' said Solomon, who noted that Guthrie and Kotb will have the best seats during the opening ceremony for their telecast.

'They're going to be taking in the athlete boat parade from one of the bridges, where all the fans will be watching,' she said. 'They're really going to contribute from a very unique perspective. They'll be watching the ceremony as the fans do. It'll be a great experience.'