Kourtney Kardashian and Kendall Jenner twin in psychedelic bikinis

This suit suits both sisters just fine.

Kendall Jenner was spotted sunbathing on a yacht with boyfriend Devin Booker in Capri on Tuesday, wearing a teeny, strappy bikini top ($83) and bottom ($75) from Gonza — a brand designed by sister Kylie Jenner’s former assistant, Victoria Villaroel, and her sister Sofia.

Keeping it all in the family, Kourtney Kardashian recently sported the same bottom with a triangle top ($75) in the print while on vacation with beau Travis Barker, mom Kris Jenner and Corey Gamble in Cabo San Lucas, Mexico.

Kendall appears to have packed multiple Gonza styles for her Capri getaway; on Wednesday, she was spotted in a multicolored triangle top ($85) and bottom ($75) from the brand. And in July, she snapped a mirror selfie in yet another look from the line, this time a green top ($75) and ruched bottom ($65).

While sister Kylie — who, as Page Six exclusively reported, is pregnant with her second child with Travis Scott — has yet to slip into a Gonza suit herself, bestie Stassie Karanikolaou has modeled a few styles as well.

Meanwhile, the Kylie Cosmetics founder is expanding her own empire to the beach and pool, recently confirming her forthcoming Kylie Swim brand.

Kim Kardashian, meanwhile, recently teased her own potential foray into swimwear as well.

Though fall might be around the corner, the Kardashian-Jenners are still clearly celebrating hot girl summer.