Jennifer Aniston called in to the "The Oprah Winfrey Show" in another effort to quash the rumor that she's marrying boyfriend Vince Vaughn.

"The rumors are so unbelievable," Aniston told Winfrey during Monday's telecast. "For us, I guess, at a certain point, you have no other choice but to think it's funny."

It has been widely reported that Winfrey was planning to throw her friend Aniston an $8 million wedding, including having master cellist Yo-Yo Ma play as they walked down the aisle, E! Online noted.

Winfrey joked $8 million would not even cover the lavish plans she had been reading and hearing about through the grapevine.

Aniston and Vaughn co-star in the upcoming comedy, "The Break-Up."