They might no longer be lovers, but it looks as though Diddy has nothing but words of high praise for his ex-girlfriend Jennifer Lopez. The rap mogul says that Lopez is a "work of art" while he also goes on the record to slam Kim Kardashian.

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During an interview with Access Hollywood on Tuesday, Diddy said, "On my God, oh my God! I am so lucky to have that great woman in my history. She is one of the greatest I've ever seen. Go girl!"

He added, "We're great as friends. I'm great as a fan. That 'Booty' video is in heavy rotation on Revolt, by the way!"

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When asked if Kim Kardashian's derriere can compare to that of Lopez's, Diddy said, "No way!"

He explained, "No disrespect Kanye and Kim, but that thing right there is something special."

Meanwhile, it looks as though Lopez isn't doing too well in the charts these days as her latest album, A.K.A. has failed to sell many copies.

Naughty But Nice Rob reports that Lopez's album has sold only 66,000 copies in the past three months, despite her efforts in heavily promoting it this summer. In comparison, Katy Perry's recent album has so far sold over 1.5 million around the world.

And if that weren't enough, the singer's latest video for her single Booty has gotten slammed by her fans, too. Many are criticizing the singer for the risque video of her suggestively grinding on another woman and smoking a cigarette in the clip, too.

Fans have taken to Twitter to complain about the four-minute clip, which features both a scantly-clad Lopez and Australian rapper and singer Iggy Azalea dancing in what looks to be this year's most provocative dance video.

Some fans wrote, "Pop star or porn star... so hard to differentiate anymore. Ladies act your age, looking at you Jennifer Lopez."

Tags: Jennifer Lopez