The Fighter star Melissa Leo has said sorry for swearing during her Oscar acceptance speech last night.

Melissa’s Oscars speech had to be bleeped by broadcasters after she used the F-word, the first time it has ever been used in the history of the Academy Awards ceremony.

“When I watched Kate [Winslet win the same award] two years ago, it looked so f***ing easy!” she told the audience and a billion TV viewers who were watching the ceremony.

“Oh my god! Oh wow!. Really, really, really truly wow. I know there have been a lot of people saying some real, real nice things to me for several months now. But I am just shaking in my boots here.”

Leo later apologised backstage for using the swear word and said it was “very inappropriate”.

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“I apologise to anyone they offend. There is a great deal of the English language that is in my vernacular. I did not mean to offend, and [it was] a very inappropriate place to use that particular word.”

Leo beat co-star Amy Adams, The King’s Speech’s Helena Bonham-Carter, True Grit’s Hailee Steinfeld and Animal Kingdom’s Jacki Weaver to bag the Oscars prize.

Leo plays mouthy mum Alice Ward in The Fighter, who manages her two boxing sons Mickey (Mark Wahlberg) and Dicky (Christian Bale).

When Bale scooped the Best Supporting Actor gong, he said in his acceptance speech: “I’m not going to drop the F-bomb like she did.”

Watch Melissa Leo’s Oscar speech.