Kim Kardashian's sex tape sales spike after Kanye West baby news

TMZ is reporting that Kim Kardashian's sex tape, the Vivid Entertainment video titled "Kim Kardashian: Superstar," has seen a dramatic spike in sales since the reality TV star and boyfriend singer Kanye West announced that they're expecting a baby together.

Apparently the sex tape has seen an 80% jump in sales since Sunday night, which is the biggest increase since Kim's 2011 marriage to NBA player Kris Humphries. Sales have been steadily rising since Kanye and Kim began dating last spring.

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The sex tape was made by Kardashian and her then-boyfriend singer Ray J. (brother to singer Brandy) in 2003 and was leaked in 2007.