The 45-year-old singer and former "American Idol" judge was leaving The Beverly Hills Hotel when she told TMZ, "I still don't know her" in response to their query about the current "American Idol" judge.
Carey famously claimed to not know Lopez in the early 2000s, sparking years of feud rumors between the two stars.
"There isn't [a feud]," Lopez told host Andy Cohen before explaining why she's attended nearly every Las Vegas residency show except Carey's.
"I think last year when [Mariah's residency] started I was already here in New York filming 'Shades of Blue' and doing 'Idol' on the weekends," she said. "Then I started preparing my own. I don't think there's been a time when I could have seen it."
Carey previously told The Cut she "really wan't trying to be funny" and "was just being honest" when she made the initial comment.
The singer kicked off her Mariah Carey #1 to Infinity residency show at Caesar's Palace in May and will bring it to a close Sept. 11.
FOLLOW REALITY TV WORLD ON THE ALL-NEW GOOGLE NEWS!
Reality TV World is now available on the all-new Google News app and website. Click here to visit our Google News page, and then click FOLLOW to add us as a news source!
Lopez, meanwhile, is in the midst of her All I Have residency at The Axis at Planet Hollywood, where Britney Spears also performs. The show began Jan. 20 and will run through Dec. 17.
Copyright 2016 United Press International, Inc. (UPI). Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.