Hamilton joined Kardashian and her three younger children on a trip to Japan, a source confirms to PEOPLE

Lewis Hamilton has joined Kim Kardashian and her kids for a spring break trip.

A source confirms to PEOPLE that Kardashian, her three younger children, Saint, 10, Chicago, 9, and Psalm, 6, are on a vacation with Hamilton, with whom Kim, 45, has been romantically linked. Kim shares the three children and daughter North, 12, with ex-husband Kanye West.

Kim and her children are in Tokyo for spring break, alongside Khloé Kardashian and her children, True, 7, and Tatum, 3, the source tells PEOPLE.

The source’s confirmation comes after Kim and Hamilton, 41, were spotted in Tokyo.

Another source tells PEOPLE, “He’s just an easygoing guy with great energy. Her family likes him and Kim’s very into him. They are both busy with their careers, but see each other as much as possible. It’s more than just a casual connection. It takes a lot to capture Kim’s interest and she’s definitely intrigued.”

Ahead of their vacation, the pair fueled the rumors after the F1 driver wrote a flirty comment on The Kardashians star’s Instagram post from the 2026 Vanity Fair Oscars Party.

On March 16, the SKIMS founder shared snaps from the March 15 event and several clips and photos of herself getting ready. In response to the sultry snaps, Hamilton wrote a simple comment: “😍.”

Their outing to Japan follows recent trips around the globe. They were spotted at a hotel in Paris in early February, per TMZ. “It was a romantic meetup,” a source told PEOPLE at the time, with the outlet reporting that the pair landed in Europe courtesy of a private jet.

Weeks later, they headed to Arizona, where the rumored couple was at Lake Powell in early March, per TMZ. While there, they were photographed on a stroll to catch the desert sunset. At the time, they each separately shared recaps of their trip on social media, featuring faceless footage of the scenery with matching backgrounds on the same day.

Kim Kardashian and Lewis Hamilton at the super bowl on February 8, 2026.NBC

Along with a visit to Arizona, they were spotted in California after they were photographed together at Super Bowl LX on Feb. 8.

“There’s a comfort level there, because they’ve known each other for years,” the source said after Super Bowl LX. “Kim’s gone on dates and met people over the years, but Lewis is the first guy she’s really into in a long time. She always liked him. She’s excited about their romantic connection.”

Kardashian is “just taking things moment by moment and seeing where it goes,” the insider added. A source told PEOPLE that Hamilton makes the All’s Fair actress “feel safe, and she genuinely enjoys spending time with him.”