Summertime fun.

Princess Diana’s eldest niece, Lady Kitty Spencer, shared a rare look into her vacation with her billionaire husband, Michael Lewis.

The British model, 35, recently took to Instagram, sharing a carousel of images and videos that included the businessman, 67, and their 3-year-old daughter, Athena.

In one video, Lewis held onto the toddler as she splashed in the waves at a beach in the Hamptons.

In other photos, Athena placed vegetables into her basket while at the grocery store with her mom. The young child also watered a garden full of yellow and orange flowers and drew with washable crayons on the windows of their vacation home.

“Sweetest summertime in the Hamptons 🌸,” Spencer — the daughter of Diana’s brother Charles Spencer and model Victoria Aitken — captioned the post.

In the comments section of her post, Nicky Hilton wrote, “❤️.”

Lady Eliza Spencer and Lady Amelia Spencer, twin sisters of Kitty, also commented, writing that the photos were “so beautiful.”

The Dolce & Gabbana brand ambassador and Lewis met through mutual friends in 2018.

The following year, the couple was photographed leaving a New York City hotel together.

Lewis reportedly proposed to Kitty in 2020 right before Christmas.

On July 24, 2021, the pair tied the knot in a lavish three-day celebration at the Villa Aldobrandini in Frascati, Italy.

Kitty stunned in five different custom Dolce & Gabbana dresses for the lavish nuptials.

The couple secretly welcomed their daughter, Athena, in April 2023. They did not share the news of the little one’s birth until the following year.

The chairman of TFG Limited married his first wife, Leola Lewis, in 1985. The exes share three children.