Over the last few months, Kim Kardashian has been shoved out of the spotlight by her own family.

Sister Khloe got married to Lamar Odom; sister Kourtney got impregnated by Scott Disick.

As she struggles to recapture headlines, many have naturally wondered: Will Kim star in another sex tape? After all, her publicized banging of Ray J is the reason Kim and her family have risen to such annoying levels of fame.

However, in the November issue of Cosmopolitan, Kardashian has bad news for horny young men everywhere. Asked about her amateur porn career, she said:

“I was devastated, but when something negative happens, I pick myself up and move on... and I don’t make the same mistake twice."

Then again, this could simply imply Kim will be on top next time.

Meanwhile, Kim appeared on The Late Show with David Letterman last week; ironically, the interview took place during the same night Dave revealed his former relationship with Stephanie Birkitt.

During the program, Kardashian defended her step-brother Brody... and the African diamond industry. Watch clips after the jump.

Kim on Letterman