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The Sexiest Music-Biz Catfights - Nobody knows why men get turned on by women fighting, but it seems to be a pretty basic fact about the (straight) male psyche. It's part of the reason that all eyes are on Ciara and Rihanna, who seemed to be continuing their two-year-old tiff with recent shade-throwing comments on online and in interviews. But this is just the latest fight between two entertinment-industry beauties to get everyone talking. Click on to see more sexy music-biz catfights.(Photos from left: Will Alexander/WENN.com, Larry Busacca/Getty Images)

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Keri Hilson vs. Beyoncé - Gossip blogs and Beyoncé fans have claimed that Keri was throwing side-eye at Queen Bey ever since the former sang, "She can sing, but need to move it to the left" on her 2008 song "Turnin' Me On," an alleged reference to Beyoncé's hit "Irreplacable." (Photos from left: Michael Buckner/Getty Images, John Moore/Getty Images)

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Beyonce vs. Keyshia Cole - Keyshia Cole stirred up the Beyhive when she called out Beyoncé via Twitter for her aggressive lyrics on “Bow Down.” Bey has yet to respond, but her fans have sure had a lot to say, flaming Cole on Twitter.  (Photos from left: Judy Eddy/WENN.com, Dave Kotinsky/Getty Images)

Photo By Photos from left: Judy Eddy/WENN.com

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Nicki Minaj vs. Gloria Velez - Famed former video vixen Gloria Velez put Nicki Minaj on blast in 2010, releasing a diss track that poked accused the Young Money femcee of having plastic surgery, faking her rumoured bisexuality and sleeping her way to the top.(Photos from left: Jason Merritt/Getty Images, Johnny Nunez/WireImage)

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Eve vs. Iggy Azalea - This intergenerational flare-up between two rap beauties popped off when Eve said in an interview last year, "I’m not really into the Iggy Azalea chick. I can’t really f--k with her music." (Photos from left: Astrid Stawiarz/Getty Images, Christopher Polk/Getty Images)

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Amber Rose vs. Kim Kardashian - This flare-up started behind-the-scenes, when Amber Rose was still dating Kanye—she later claimed that he would often cheat on her with Kim, who she called a "home-wrecker" in an interview last year. (Photo: Michael Stewart/Getty Images, Frazer Harrison/Getty Images)

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Nicki Minaj vs. Mariah Carey - American Idol should’ve known what they were in for when the put outspoken two New York City divas on the same show. Sparks quickly flew, with reports that Nicki even threatened Mariah physically at one point, and the two still throw shade at each other on camera(Photos from left:Dave Kotinsky/Getty Images, David Livingston/Getty Images)

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Iggy Azalea vs. Azealia Banks - Beef between these two similarly named rappers seemed inevitable, and sure enough, last year Banks called out Iggy for her spot on the XXL Freshmen cover and some racially insensitive lyrics, sparking a months-long back-and-forth in the press and online.(Photos from left: Christopher Polk/Getty Images, Tullio M. Puglia/Getty Images)

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Rihanna vs. Karrueche Tran - Many gossip blogs claim Chris Brown’s two on-and-off again boos have engaged in a months-long subliminal cold war on Twitter.(Photos from left: Rob Kim/Getty Images, FayesVision/WENN.com)

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Lil Kim vs. Foxy Brown - Kim and Foxy started out friends, even appearing on the cover of The Source magazine together early on in their careers. But apparently the rap world back then was only big enough for one sexed-up Brooklyn femcee: The two started a thinly veiled on-wax war that eventually spilled into the streets with a shooting outside Hot 97 in 2001. Kim caught a perjury bid over the incident, and the two are still clashing in the studio and onstage to this day.(Photos from left: Larry Busacca/Getty Images, John Ricard/BET)