The Kardashians are back, and they’re making a splash.

Kim Kardashian joined Kylie and Kendall Jenner and Khloé Kardashian for a Sєxy poolside shoot in the Season 4 premiere of the famous family’s Hulu show, out today, with the sisters posing in coordinating swimwear as they snapped “a couple thirst trap pH๏τos.”

While Kim, Kylie and Kendall all opted for classic black string ʙικιɴιs, Khloé went for a brown one-piece for the impromptu poolside shoot during their vacation in Cabo San Lucas — and it turns out the pics had a greater purpose.

While enjoying an al fresco dinner at their oceanfront digs (and discussing how Khloé’s not back together with ex Tristan Thompson) the 39-year-old Good American founder told her family, “I need people to know that I’m single.”

Momager Kris Jenner replied that she needed “a great pH๏τo,” giving Kim, 42, the idea for their sizzling shoot.