Kim Kardashian's ex-boyfriend, Ray J, hasn't publicly commented on the reality star posing nude for Paper magazine but we bet he's one happy camper. According to TMZ, the star of "Love & Hip Hop: Hollywood" received a huge payday the week Kardashian's photos were released.

A source from Vivid Entertainment told the site that sales for Kardashian and Ray J's sex tape, "Kim K Superstar," spiked significantly last week. Reportedly, Ray J received a check for $50,000 during the first week Paper magazine released the images. He's expected to make even more money.

According to TMZ, the "One Wish" singer has been receiving $90,000 every three months for the tape. Because so many people flocked to Vivid to buy the video again, head honcho Steve Hirsch told TMZ that "Kim K Superstar" is now the biggest selling celebrity sex tape ever. Up until last week, Pamela Anderson and Tommy Lee held the title.

Kardashian appeared on Australia's "The Project" on Tuesday (Nov. 18) and told host Rove McManus that she posed in her birthday suit because "it made me feel confident and really good about myself."

"I was so honored and excited to work with [photographer Jean-Paul Goude] because he is a legend, and for me that was something I wanted to do to make myself feel confident," Kardashian said. "As a role model I'm not saying anyone else should do that, but for me it was an art project and it taught me to do what you want to do."

"I'm never one to preach, but I feel really positive and really good about myself," she continued. "I love the photos, I did it for me, I hope other people like them."

The E! star also tried to teach McManus how to balance a champagne glass on his derriere but it didn't work.

"You don't have as big a butt as I do, so..." Kardashian jokingly said.