R&B star Ray J is reportedly making some extra cash courtesy of ex-girlfriend Kim Kardashian‘s new Paper Magazine cover spread.

Since the cover premiered online last week, their now-infamous retail sex tape has received a boost in sales.

The photos triggered renewed interest in “Kim K Superstar,” and our sources at Vivid Entertainment say sales of the video have dramatically spiked … so much so, Ray J will pocket $50K from the last week alone … way up from what’s he’s been getting. Ray has been getting around $90K every 3 months, so this is a real ass-tronomical increase. Steve Hirsch, president of Vivid Entertainment, tells TMZ, the most recent spike makes “Kim K Superstar” the biggest selling celebrity sex tape of all time. (TMZ)

Check out how Kim’s sister Khloé reacted to the pics right here…

Instead of slamming the pics, Kim’s sister Khloé Kardashian recently rode behind the curvy reality TV star.

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“You know what? If you’ve got it, flaunt it,” Khloe said. “I think Kim has an amazing body, she looks incredible. To each their own.” “The thing that I love about Kim,” Khloé continued, “Kim and Kanye, they do things together, like that’s something they both agreed to do as a couple—even though it was just Kim—but they discuss it and they both think it’s art and it’s cool, and that’s their thing.” (E! Online)

The publication’s editorial director Mickey Boardman addressed photoshop rumors about the cover last week.

“Every cover of every magazine is airbrushed on some level,” Boardman tells Us. “But what I will say, is that is her butt. It is not padded. It is not augmented. That is all really her. But, yes, there was retouching to clean things up and make things look amazing,” he admitted. “That’s what retouching is. It’s not building an ass that isn’t there or taking 50 pounds off the waist.” (Us Weekly)

Kim’s rap star husband Kanye West jumped onto his Twitter page to post up the Paper cover and share his reaction last week.

“#ALLDAY,” Kanye tweeted late November 11. (Kanye West’s Twitter)