Though the sisters clearly had an amazing time soaking up the sun in Mexico, things got much more emotional when Kim appeared on The Ellen DeGeneres Show.
In the interview, which aired on Thursday, Kim opened up about her Paris robbery, and addressed the apparent family tension with Caitlyn Jenner.
Kim stood firmly behind her mother, Kris Jenner, when asked for her thoughts on Caitlyn’s new memoir, The Secrets of My Life.
"My heart breaks for my mom because I feel like she's been through so much," Kim explained. "[Caitlyn's] promoting this book and she's saying all these things. And I just don't think it’s necessary. I just feel like it's unfair, things aren't truthful."