She had given up her modelling career to marry Dino in 2003 and set up a successful skin care range.
But Monica, from Canyon County, Santa Clarita, chose to walk the catwalk once again following the birth of their children in 2010.
Dino opposed the move, according to sources, and finally “hit the roof” when she posed for photographer Kenneth Matthews.
They began a custody battle over their children and a bitter divorce process. She later found out he was taped trying to hire a friend to kill her.
“The tipping point was a photo shoot she did with Kenneth Matthews in 2012. Dino saw the pictures and hit the roof.
“It was a professional shoot in an LA studio, there was a team of assistants, make up artists and stylists. But Dino accused Monica and Kenneth of getting too close.
“Sure the photos are raunchy – they are underwear shots – but that’s what Monica’s fans expect. Dino told her she wasn’t doing anymore photo shoots. Period.
“He stopped her doing anymore movie shoots, he killed a possible movie deal.
“That’s when Monica knew she needed to leave him. And Dino went crazy. He was a control freak who needed to be win at everything. It was then he allegedly hired the hitman.”
Guglielmelli allegedly offered Richard Fuhrmann $80,000 to kill his wife.
He has been in custody since being unable to find the $10million bail.
Monica is now fighting to regain her share of their skin-care business. Monica’s representatives were unable to comment on the case.