C'MON SON! RIHANNA'S FAKE BEEF WITH KATY PERRY! SHE JUST THREW HER BACHELORETTE PARTY! JUST LIKE SHE'S JAYZ'S SIDE PIECE!

Just because Rihanna is friends with Katy Perry, that doesn't mean she has to like her music.
And it turns out she really doesn't.

In a recent interview with BBC's Radio 1 about her new album, "Loud," the 22-year-old singer slammed Perry's chart-topping bubblegum pop.

"I didn't want the generic pop record that Ke$sha or Lady Gaga or Katy Perry would do," she said, according to RadarOnline.com. "Every song was tailored to me."

The blunt statement comes as a shock after the "Only Girl (In the World)" singer recently threw a bachelorette party for her "generic pop" buddy.

The "California Gurls" singer and Rihanna celebrated Perry’s upcoming nuptials at Las Vegas' Hard Rock Hotel on Sept. 18. The duo was photographed attended the Cirque Du Soleil's "KA" show at MGM Grand Hotel/Casino and later headed over to the Sapphire strip club.

"Signing up for a liver transplant now," the bride-to-be tweeted during the festivities.

Perry and Russell Brand will reportedly return to the site of their New Year's Eve engagement in India to tie the knot later this year.

Meanwhile, the singer hasn't had time to mull over Rihanna's slight as she has been in Germany performing on "Wetten Dass...?"

Perry wowed her Teutonic audience in an uber tight pink sparkly bodysuit to perform as a musical guest on Saturday.

"I'm starving, what should I have for lunch... Beer? Time to bust out my wench dress. God knows I've got the rack for it. #oktoberfest," Perry tweeted after sporting the traditional dirndl for the show.

Rihanna will be performing on "Saturday Night Live" on Oct. 30, just one month after Perry appeared as a musical guest.

THIS IS A STORY FROM THE DAILY NEWS & IF YOU BELIEVE IT YOU'RE STUPID!