‘Gossip Girl’ star Kelly Rutherford swears by airport workouts over the gym

Call it Upper East Side cardio — with a carry-on.

More than a decade after playing Serena’s mom, Lily van der Woodsen, on "Gossip Girl," Kelly Rutherford is now trading Pilates for passport stamps.

The actress told Fox News Digital she prefers a fitness routine that keeps her looking and feeling her best, effortlessly, of course.

JANE SEYMOUR EMBRACES 75TH BIRTHDAY WITH SWIMSUIT BEACH PHOTO AND MESSAGE OF GRATITUDE

"I think just pushing luggage through the airport lately has been [my] workout," she laughed. "Seriously, it’s been a lot of that. But I love to swim. I was on the swim team in school. I find it so peaceful, and it’s good for your whole body. And I find it’s really good mentally, too. So, I love that."

"I love to play tennis in the summer with my kids, and [do] a lot of things outdoors," she shared. "I love to go for a hike or a walk. I have little dogs. I have two little dachshunds, so they keep me very busy running after them."

That jet-set pace is no accident.

WATCH: KELLY RUTHERFORD SHARES WELLNESS ROUTINE AND LIFE IN MONACO

The star, 57, recently teamed up with her longtime friend Véronique Gabai to launch a perfume, "Rose Première." It's a luxurious blend of mandarin, musk and the iconic romantic flower.

Last year, the women traveled to Grasse in the south of France, where the Rose de Mai of Grasse, a rare and highly fragrant rose, is hand-harvested in the early May mornings when its scent is at its peak. The women spent many sunrises bonding over picking flowers.

The passion project brought Rutherford back to her childhood, watching her grandfather tend to his rose garden — while keeping her active.

For Rutherford, though, it's also about something deeper.

"I think you always want to stay healthy for your kids and be a good example for your children," she explained. "As much as we want to give advice and say so many things to do, they really follow mostly what we do more than what we say. And I think about that a lot because I tend to want to do too many things. And so, I have to say, ‘OK, I don’t want to set that example of being too stressed and trying to do too many things and worry.’"

"I've learned to say, 'How do I create a balanced life?'" she said. "But they're giving me advice at this point. I think the greatest thing I've learned is to ask your kids for advice because they know. They're so smart. Every generation comes in with more knowledge and more information, certainly about the time they're living in. So, I think it's important to listen and be open."

The star is in familiar territory. While she calls the U.S. home, she’s also built a life in Monaco, where her children are based.

CLICK HERE TO SIGN UP FOR THE ENTERTAINMENT NEWSLETTER

"I love it there," she gushed. "It's so beautiful. Look, anytime I think you're close to your kids, it's the most beautiful thing. And it's a beautiful place. It's very quiet. Obviously, in the summer with the Grand Prix and all the people coming to enjoy the south of France, it's super busy. But most of the year, it's super quiet and a beautiful place to live."

"If you go to Paris, you're inspired by people walking down the street," she pointed out. "In Monaco, it's the same thing. I'm always inspired by Monaco. You can get really dressy in Monaco, but you can also, like in New York, be casual and relaxed. Maybe it's a bit conservative in certain ways, but you find that everywhere."

"And Grace Kelly — I think we’ve got to give her a lot of credit for Monaco and for what it is today, and for her style and what she brought there," Rutherford continued, referring to the American Oscar winner who became princess of Monaco.

"I think of her often in Monaco — what she brought, how she raised her children and what an amazing woman she was."

"It’s funny, I remember taking my daughter for a mani-pedi in Monaco," Rutherford reflected. "There was a perfume on the counter. It was a fragrance for Grace Kelly. I thought, ‘I’m going to have my own perfume like Grace Kelly!’"

The late actress has also inspired Rutherford's approach to makeup. These days, she prefers simple "clean beauty," sticking to products made without harsh or unnecessary ingredients.

LIKE WHAT YOU’RE READING? CLICK HERE FOR MORE ENTERTAINMENT NEWS

But her glow isn’t just skin-deep.

"What makes me feel confident? My goodness, I think love," she said. "I think loving my children and feeling loved by my children and my doggies. Having work I love and friends I love, like Véronique Gabai, whom I've known for 15 years. To work with people that I love and admire. I think it's [about] having a really good foundation of love, and that foundation in my life helps everything else. I think it gives me a lot of confidence in what I'm doing."

"It will always be love," she added.