Australian actress Nicole Kidman and her husband and singer Keith Urban are said to be on the verge of divorce, according to the reports swirling around. After eight years of marriage, the power couple is said to be facing troubles in their marriage. Celebrity Dirty Laundry report suggests that the reason behind their divorce could be Keith Urban cheating on his wife.

Rumours about couple's split are running rampant. It is believed that their marriage has now hit rock bottom. "There is cheating with a 'sexy superstar' involved in the couple's divorce," claims National Enquirer's newest edition (via Celebrity Dirty Laundry).

June 16th print edition of the magazine claims that Keith Urban has spent past few months travelling from Los Angeles to Australia. He has been busy filming the reality talent show "American Idol," on which he is the part of judging panel. Meanwhile, Nicole Kidman has "had a touch of green-eyed monster," according to the gossip site.

The Web site notes that even though Nicole Kidman wants to see her husband Keith Urban successful, she is not too happy with her own failure. Her recent release "Grace of Monaco" may have not been received the way it may have been anticipated. The backlash and negative reviews has only added to her worries.

Celebrity Dirty Laundry reports that Nicole Kidman and Keith Urban have been fighting and they have now reached "epic proportions." Involvement of "third party" is only adding to the troubles in their marriage, pushing it towards divorce.

Earlier, citing a report from National Enquirer's May 26th print edition, Celebrity Dirty Laundry claimed that Nicole is planning to have a baby in an attempt to save her marriage. The Web site notes that the actress is planning to opt for surrogacy to have a child. She thinks a baby boy can bind Nicole Kidman and Keith Urban together.

Nicole Kidman was married to Hollywood actor Tom cruise for 11 years. The two of them parted ways in 2001. The actress then tied the knot in 2006 with country singer Keith Urban. She has four children, an adopted son and daughter with Tom Cruise and two daughters with Keith Urban.