Sales of Kim Kardashian's sex tape have gone up by 80% since her pregnancy was revealed.
The couple's baby news was first revealed by Kanye onstage during his concert in Atlantic City on Sunday night as Kim watched from the audience.
The rapper said 'stop the music', then announced 'make noise for my baby mama right here,' with a wide smile. Kanye's announcement prompted a flurry of excited tweets from the audience.
Vivid Entertainment - who own the rights to 'Kim Kardashian: Superstar' which features X-rated footage of the beauty and her ex-boyfriend Ray J - report business has soared since the news was made public.
The company says the sudden surge in video-on-demand sales is the biggest since Kim's 2011 nuptials to Kris Humphries.
Additionally, they told TMZ that sales of the erotic material - on DVD, online and video-on-demand - have increased steadily every month since the 'Keeping Up With the Kardashians' star started dating Kanye last spring.
The tape - which was made in 2003 - was leaked online in 2007.
Kim sued Vivid Entertainment for ownership of the tape - which was allegedly stolen during a house move - after they paid $1m for the rights but in April 2007, she dropped the case and settled with the company for $5m.
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