"Adam came up to her from behind and grabbed her with one hand on her stomach and one hand directly on her butt cheek," the insider claims. "Heidi had six bodyguards with her. They took his hand off her and moved him away from the situation."
The insider tells Life & Style that Heidi claims she'd been annoyed with DiVello for a while. "Heidi started bringing security to the set because she felt Adam was getting a little creepy. He was very touchy-feely and she insisted he wouldn't stop asking her to strip down to a bikini for scenes. Adam wasn't on set much for six seasons until Heidi got her new boobs. And now he shows up everywhere."
Another insider says it's been discussed on set that DiVello may use his position with the show to get close to young women, claiming, "You have to stroke his ego to get a big role on his shows."
An MTV spokesperson denied the allegations, telling Life & Style: "We have looked into this matter and the allegations made against Adam DiVello are completely false and without merit. Adam not only created The Hills and The City, launching the careers of several cast members, but has worked diligently to maintain a respectful and appropriate production environment."
In a statement released by MTV, Lauren Conrad, a former star of The Hills, says, "I am in utter shock at the allegations made against Adam DiVello. Not only are they completely absurd but they are 100% without merit. Adam is a true professional and a wonderful person to work for."
Meanwhile, co-star Lo Bosworth tweeted her take on the matter: "I'll repeat it: no one is/has ever been assaulted during filming of our show. hey spiedi, do you know the definition of slander? NOT OKAY."