“Real Housewives of Beverly Hills” alum Diana Jenkins is shutting down rumors that she was the woman Hayden Panettiere claimed put her in bed with a “very famous” and “undressed” man at 18 years old. “Diana has had to deal with false online rumors before, and sadly this is just another example of that,” Jenkins’ spokesperson told TMZ Wednesday. “So let me be 100 percent clear about this: It most certainly is not Diana, and anyone who claims it is her will be sued.” Diana Jenkins (pictured above in a “Real Housewives of Beverly Hills” Season 12 cast photo) is denying rumors that she was the woman Hayden Panettiere writes about in her book, “This is Me: a Reckoning.” NBCU Photo Bank via Getty Images “Diana has had to deal with false online rumors before, and sadly this is just another example of that,” a rep for the former reality star (pictured above standing alongside “RHOBH” star Kyle Richards) said Wednesday.…