Actor rants about Stewart and her well-publicised relationship problems with Robert Pattinson

Comedian Will Ferrell branded Kristen Stewart a “trampire” during a mock-distraught rant on US chat show Conan – scroll down and click to watch.

Stewart recently revealed that she had cheated on her boyfriend, Twilight co-star Robert Pattinson, with Snow White And The Huntsman director Rupert Sanders. Speaking about their illicit encounter, she said: “This momentary indiscretion has jeopardised the most important thing in my life, the person I love and respect the most, Rob. I love him, I love him, I’m so sorry.”

Ferrell, who was on Conan to promote his new flick The Campaign, embarked on a pretend breakdown about their soured love affair, moaning: “What they had was so special, Conan. You don’t even know what they had! They were in love! And she just threw it all away!”

He went on to add:

It’s not going to be fine, ever. Never going to be fine. What they had was so special… She is a trampire.

Earlier this year, Ferrell confirmed that he will star in a sequel to his cult comedy film Anchorman: The Legend Of Ron Burgundy. Appearing in character as Burgundy in a pre-recorded segment – also on Conan – he revealed: “I actually have an announcement. I want to announce this to everyone here in the Americas, to our friends in Spain, Turkey and the UK – including England – that as of 0900 Mountain Time, Paramount Pictures and myself, Ronald Joseph Aaron Burgundy, have come to terms on a sequel to Anchorman.”

According to reports, Adam Mackay will return to write and direct the sequel, while Judd Apatow is once again on board as producer. Paul Rudd and Steve Carrell are also tipped to reprise their roles as field reporter Brian Fantana and weather presenter Brick Tamland. However, there is no word yet on whether Christina Applegate will return as Brugundy’s co-anchor Veronica Comingstone, or whether David Koechner, Luke Wilson, Ben Stiller, Seth Rogen, Vince Vaughn or Jack Black will return.

Anchorman 2 is due to start production at the end of this year ahead of a 2013 release date.