Olivia Colman has admitted that she didn't prepare any part of her winner's speech when she won the Best Actress Oscar at the Academy Awards.

The 45-year-old took home the prize for her portrayal of Queen Anne in The Favourite.

When asked how much of her speech was prepared, she told OK! magazine: ''None of it. I've just been told I forgot [to thank] Melissa [McCarthy] and Yalitza [Aparico] as well, but you know it's not an everyday occurrence.

"I don't know how anyone is composed and remembers everything because it's a very weird situation.''

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 Accepting her award, the actress said the experience was "quite stressful" while joking about forgetting people in her speech.

''It's genuinely quite stressful. This is hilarious. I've got an Oscar. If I forget anybody, I'll find you later and give you a massive snog but I'm sorry.''

Olivia - who has three children with husband Ed Sinclair - tried to thank her parents but the emotion grew too much.

She said: ''My mum and my dad... you know.

''My kids who are home and watching. Well, if you're not, well done but I sort of hope you are, this is not going to happen again.''

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