With no caption other than a blushing emoji, Kendall shared the racy pic on June 26, which shows her laying on her stomach as she checks her phone, with her string bikini clearly laying beside her.
Along with her sizzling snap, the 26-year-old included a few other seemingly random photos in the post, including one of herself horse-jumping and a close-up of some sushi. She also shared a video from inside a car traveling on the highway at sunset.
Fans may be seeing more thirst-trap-like pics from Kendall in the near-future now that she is back to living the single life.
"Kendall and Devin hit a rough patch recently and have been split for about a week and a half," the source shared, adding that while the former couple had a "really nice time" in Italy together during sister Kourtney Kardashian's wedding festivities, "once they got back, they started to feel like they weren't aligned and realized they have very different lifestyles."
According to the insider, Kendall told the NBA star, 25, she "wanted space and time apart," however, it may not be a permanent breakup.
"They have been in touch since and do care about one another," the source noted. "They both hope to make it work, but as of now, they are split."