Melissa Rivers Receives Porn Offer

As TMZ first reported, Rivers is now dating Steven Hirsch the head man at Vivid Entertainment ... a company famous for selling celebrity sex tapes.

But another adult company, PornHub.com, has fired off a letter to Rivers to see if she and her new BF would be interested in filming a tape for them. The company believes it would be the first sex tape to feature "a sexy Jewish American Princess."