Matt Lauer

Meredith Vieira is fired up and coming to the defense of her "Today" co-host Matt Lauer, over allegations that he cheated on his wife Annette.

"I know what the truth is -- and it's just a bunch of lies," Vieira tells "Extra."

"Today" host Matt Lauer and his wife, Annette, are outraged over allegations that Lauer has left his family over infidelities, calling the tabloid story "a work of fiction."

"I am living in my apartment with Annette and my children as a family and a couple," Lauer tells People.com in an interview from France, where he's been co-anchoring the NBC morning show from the Cannes Film Festival. "I have never moved out. I am not moving out. There is no truth to that."

Brittany Murphy's husband and mother sat down with Matt Lauer on the "Today" show to discuss the actress' sudden death.

Murphy died Dec. 20, and the cause of death is still unknown; toxicology results are expected in a few weeks.

"Let's set the record straight once and for all -- Brittany was not taking any medication for her mood, for anorexia," Murphy's husband Simon Monjack said. "It's utterly ridiculous that these rumors have perpetuated."

Investigators found prescription medication for depression, seizures, anxiety and pain. Monjack told Lauer his late wife used Vicoprofen and Sarafem during her menstrual cycle. "Most of the medications are mine. I suffer from seizures," Monjack declared. The screenwriter began to stutter and added, "I suffer from, you know, heart... my heart stopped on December 3rd when we landed from Puerto Rico."

See Brittany's life in photos

Murphy's mother Sharon began to shake her head when Lauer asked about Brittany's rumored cocaine use. "It's just so horrific. She was diagnosed with a heart murmur when she was a young teenager and she was terrified of anything happening to her. She never did any drugs, ever." Sharon replied.

The two also denied Brittany had any type of eating disorder. "You just need to go to her favorite restaurant, Chateau Marmont, and speak to any waiter, who would tell you that she would happily order four plates of food and eat them all," Monjack stated.

Monjack also claims Murphy's role in "Happy Feet 2" was pulled and it broke her heart. He explained, "Hollywood is a village and once you upset the villagers they talk and they gossip and they rumor. They have blood on their hands, and I hope they wash them with very hot water because of the way they treated Brittany Murphy while she was alive."

The grieving husband and mother have established The Brittany Murphy Foundation in her memory.

May the force be with the "Today Show!"

The "Today Show" crew celebrated Halloween by dressing as characters from "Star Wars" on Friday morning.

Hoda Kotb dressed as Yoda, Natalie Morales as Queen Amidala, Kathie Lee Gifford as C-3PO, Meredith Vieira as Princess Leia, Matt Lauer as Luke Skywalker, Al Roker as Han Solo and Ann Curry as Darth Vader for the annual "Halloween on the Plaza."

"Star Wars" creator George Lucas and the team at Lucasfilm helped the anchors with their costumes and provided real props from the films -- they even sent along 8-foot-tall Chewbacca!

"Extra" wants to know -- Who wore the best costume?

David Beckham chatted with Matt Lauer on the "Today Show" this morning -- and when the newsman complimented his suit, the soccer stud handed it over!

Matt showed off his suit afterward, jokingly saying, "I'm selling it on eBay." Let's hope Lauer knows a good tailor -- Beckham is roughly 6', while Matt is 5'9".