Former reality TV star Ariane Bellamar has accused actor Jeremy Piven of sexually assaulting her on more than one occasion.

On Monday, the “Beverly Hills Nannies” star tweeted at Piven, asking whether he remembers cornering her and grabbing her breasts on the set of his HBO series “Entourage”.

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Bellamar followed up that tweet with another saying that Piven had “forcefully fondled” her twice, both on the “Entourage” set and at the Playboy Mansion.

Bellamar followed up those tweets with a few more, in which she hints at “abusive, explicit texts” Piven sent her.

The allegations by Bellamar come in the wake of a number of high profile men in Hollywood and other industries being accused of sexual harassment or assault, including Harvey Weinstein, director James Toback, and more.

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ET Canada has reached out to Piven’s representatives for comment, but has yet to receive a response.

CBS — which airs the new Piven-starring drama, “Wisdom of the Crowd” — has issued a brief statement about the allegations. “We are aware of the media reports and are looking into the matter,” said a CBS spokesperson, who offered no other details about what that investigation might entail. According to sources, “Wisdom of the Crowd” is still in production.

Following the network’s statement, Piven himself has responded to the charges, which he “unequivocally” denies.

“I unequivocally deny the appalling allegations being peddled about me. It did not happen,” Piven said in the statement to ET Canada.” It takes a great deal of courage for victims to come forward with their histories, and my hope is that the allegations about me that didn’t happen, do not detract from stories that should be heard.”