Demi Moore Going After Ashton Kutcher's Fortune — They Had No Prenup!

Demi Moore is planning to hit her cheating estranged hubby, Ashton Kutcher, where it really hurts — by plundering his cold hard cash — and as the couple did not sign a prenup, the highly paid 35-year-old is pretty much at her mercy! RadarOnline.com is exclusively reporting.

"When they first got together Demi was worth a considerable amount more than Ashton, but obviously that's changed - drastically!" A source tells Radar. "Ashton is now worth at least $100 million whereas Demi's not been bringing in the big bucks for years. Ashton has his Two and a Half Men contract, which pays him a cool $20 million a year — and he's also invested in several very successful internet startups including Skype and Foursquare. Ashton also has a very successful production company and a lucrative endorsement deal with Nikon. Demi doesn't know the full extent of Ashton's finances, but trust me, she will before a divorce settlement is finally reached!"

As previously reported, last week Moore formally filed her response to Ashton's divorce papers, which he filed on December 21 of last year. And, it's evident from Moore's response that she wants Kutcher to pay! The 50-year-old is seeking spousal support from the super rich actor and wants him to foot the bill for all of her legal costs.

"Demi's finances are solid, but she took a back seat during their marriage and allowed Ashton to be the star - and big earner - of the family," the source says. "Demi believes she provided crucial guidance to Ashton that helped him get to where he is today, and she thinks it is only fair she is compensated for that now they are no longer together. She's been unhappy with the settlement talks so far because she feels that Ashton doesn't recognize the impact she had on his life."

Further spurring on Moore to go after Kutcher's finances was his extramarital affair and subsequent new relationship with Mila Kunis.

“Demi is still really p*ssed off at Ashton,” a source previously told Radar.

“He humiliated her and then he treated her badly, which she didn’t expect and it really made her mad. She basically wants to hurt him the way he hurt her, and this is the only way she knows how."

In Demi's response filing she lists the couple's separation date as being Nov. 17, 2011 - which was AFTER Ashton hooked up with Sara Leal on Sep. 24, 2011 - who he had told he was separated from his wife.

"This could be one of Hollywood's most expensive divorces ever," the source says.