The 3,000 fans booed and chanted her name,
although she made a brief appearance on the cinema's balcony.
Jane Willis said she had travelled with her daughter Gemma, 11, from Chingford, Essex, to see the star. She said:
"Gemma's crying her eyes out because she couldn't see a thing.
"How does Britney expect people to go and see her film
if she can't be bothered to say hello to her fans."
Celebs at the première included teen singer Charlotte Church and S Club 7's Rachel Stevens.
The film opens in the UK on Friday.