Kim's sex tape: A hot topic on her wedding!

TV personality Kim Kardashian's sex tape became a hot topic on Google as more than two million people logged on to watch it as she was getting married.  (AFP)

The video of the reality star, 30, posted online by her rapper ex Ray J in 2007, normally attracts 300,000 online users a month, according to reports. In this pic, Kim and her hubby New Jersey Nets forward basketball player Kris Humphries are seen kissing during an event in California recently.

But as the publicity over her marriage to basketball ace Kris Humphries built up, millions tuned in. (Getty Images/Stefanie Keenan)

In this cover image released by People magazine, TV personality Kim Kardashian is shown in her wedding gown on the September 5, 2011 issue of People.(AP Photo/People)

Search engine Google said the Irish were the biggest watchers, paying 30 pounds to view it for a month on the web.  (Agencies)

Kardashian, 30, married NBA player Kris Humphries, 26, on August 20, 2011, near Santa Barbara, California.