United Kingdom, Jan. 30 -- Reese Witherspoon has revealed a speech misfire at an awards ceremony cost her a friendship with an A-list actress.

The 'Legally Blonde' star, 48, admitted the mishap happened when she was invited to present an award to a well-respected actress but completely misjudged the tone of the evening -delivering a roast-style speech as she believed it was meant to be a lighthearted event.

She has now admitted to People about her friendship crumbling as a result of her gags at the event: "I'm not even kidding - we're not friends anymore.

"It literally haunts me."

Reese added: "So this friend of mine - who I didn't really know that well, but she was a very serious, proper actress - she asked me to give her an award. ...