Emma, who couldn’t help but break down in tears as she and her co-stars joined at the premiere in Leicester Square last night wore a pair of black Ray Ban wayfarers.

Perhaps hiding the effects of the Potter after-party at Old Billingsgate Market in London.

It had certainly been a night of mixed emotions for the starlet who was seen crying and laughing throughout the evening.

As she joined her co-stars on stage to speak to the huge crowds that had gathered in Trafalgar Square to see the gang together for the final time Emma broke down in tears as she said her thanks.

The actress, who brought the character of Hermione Granger to life on scree said: ‘It’s overwhelming to try to find the words to say what I want to say

But I have been so privileged to play this role and be a part of these films.’

‘I’ve had the most amazing 10 years of my life. Thank you so much.’

And after jetting into London for a few days to conduct interviews and to attend the premiere itself Emma hadn’t planned to stay in the U.K. for long heading straight to Heathrow airport after leaving her hotel earlier today.

Emma will be appearing in a one hour Harry Potter special programme hosted by Larry King which will be aired in America on CNN at 8pm on Sunday.

As the cast made their final premiere call at walking the red carpet from Trafalgar Square to the cinema in Leicester Square on Thursday Emma had wowed the crowds in a floor-length ice blue Oscar De La Renta Gown.

The actress had later changed into a shorter Elie Saab dress for the after party but sported a short black dress and black trenchcoat as she left the celebrations.

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