Fellow model Hailey Bieber left a series of increasingly incredulous comments.
"The body? Hello? Not this whole vibe? Not the booty????" the wife of Justin Bieber asked.
Musician Justine Skye told the model she looked "incredible."
Olivier Rousteing, the creative director of luxury designer brand Balmain, commented with a heart-eye emoji.
"Thirst trap and I'm here for it," Jenner's older sister, Khloe Kardashian, wrote. The Good American founder revealed in a sneak peek of Keeping Up With The Kardashians on Wednesday that she had tested positive for COVID-19 earlier this year and had experienced symptoms like vomiting, coughing, shaking, hot and cold flashes and a headache, per CNN.
The pictures were presumably taken at the same "secret" location as Jenner's last stunning Instagram post, which featured the model sipping a drink at a tiki bar, posing in different bikinis, and watching a movie projected onto a large screen at the beach.
The Kardashian-Jenner clan have come under fire for the extravagant getaway pictured in these posts, which was arranged for Kim Kardashian West's 40th birthday.
Kardashian West was accused of being "tone deaf" for posting about the event, as the BBC reported. The birthday trip took place on a private island with a large group of family and friends.
The reality star said the trip followed "two weeks of multiple health screens and asking everyone to quarantine," in light of the ongoing COVID-19 crisis.
Posting photos of the star-studded event on Twitter, Kardashian West said that she was "humbly reminded of how privileged my life is," which irritated some members of the public.
While some fans praised her candor, others said that posting about the trip was "insensitive" to families separated by COVID-19, especially at a time of high unemployment.
Kendall Jenner also wished Caitlyn Jenner a happy birthday by posting a series of adorable throwback pictures of her younger self with the former athlete on her Instagram, writing, "happy birthday dad!"