The 35-year-old "Keeping Up with the Kardashians" star recently attended Lopez's 47th birthday party in Las Vegas and shared a picture of herself with the "Ain't Your Mama" hitmaker on Instagram.
"I know I'm a little late but Happy Birthday to my girl @JLo. We had the best time in Vegas celebrating your birthday and after seeing your show I started my diet again LOL," Kardashian wrote.
Calling Lopez her an all-time inspiration, she continued, "I've never met anyone who ages backwards! So beautiful inside and out! Forever my inspiration! (sic).