Emma Watson shows how much she’s grown up at Harry Potter premiere

Emma Watson didn’t let the blustery wet weather dampen her spirits as she greeted 3,000 eager fans at the premiere of Harry Potter And The Half-Blood Prince in London last night.

The 19-year-old, famous for her role as strait-laced Hermione Granger, kept on smiling as an ungodly downpour struck at the exact moment she arrived on the red carpet.

The actress is certainly growing up quickly and she seemed to enjoyed the chance to try a bold new fashion look in a free-flowing vintage 1970s Ozzi Clark dress.

All grown up: Emma Watson leaving London’s Middle Temple last night after the premiere of Harry Potter And The Half-Blood Prince

Emma led her Harry Potter co-stars, including Daniel Radcliffe and Rupert Grint, at the highly anticipated world premiere of the sixth film.

Radcliffe and Grint managed to keep their sodden look for the next 45 minutes with their spirits also apparently buoyed by the screaming audience in the Leicester Square.

After drying off, Watson later went on to celebrate with boyfriend Jay Barrymore at the after party held at Middle Temple.

All the cast members and crew arrived wearing white ribbons in memory of Rob Knox a young actor on the film who was stabbed to death in London last year.

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Not just your average muggle: Emma arrived at London’s Leicester Square just as the heavens opened up

The latest film is the penultimate in the series based on the books by JK Rowling and cost £150million to produce.

However, the fifth instalment Harry Potter And The Order of the Phoenix, earned more than £700million at the box office globally and this movie film set to be equally successful.

Half Blood Prince, released on July 15, as been dubbed the darkest film of the series yet. Fans will see apocalyptic scenes as Lord Voldermort and his followers (known as Death Eaters) cast their evil spell on the muggle (human) world.

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Drenched: Daniel Radcliffe, who stars as Harry Potter, got drenched as he stepped out onto the red carpet

Singing in the rain: Rupert Grint didn’t let the bad weather dampen his spirits

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Downpour: Rupert Grint (Ron Weasley) and Tom Felton (Draco Malfoy) swapped their broomsticks for a brolly

Trio of wizards: Grint, Watson and Radcliffe pose together after managing to take shelter from the rain

Harry, ‘the Chosen One’, also goes on a journey of discovery as he prepares for his final showdown with Voldermort.

There are lighter moments in the movie too, as Hermione and Ron share their first kiss and Harry and Ginny Weasley develop a crush on each other.

Alan Rickman reprises his role as Snape, Dame Maggie Smith is back as Professor Minerva McGonagall and Sir Michael Gambon returns as Albus Dumbledore.

A galaxy of other stars put in an appearance too, including Jamie and Jools Oliver and two of their daughters and Guy Ritchie and his son Rocco.

Myleene Klass turned on the glamour in a flattering white knee-length dress, while singer Jamelia opted for the leggy look in a revealing pink and red coloured mini dress.

Commenting on the crowd Emma Watson said: ‘It’s just so fantastic that people have been so dedicated to come down and see us all. My message to the fans is thank you so much I love you all.’

Watson said she’ll be sad when the series finally comes to an end in 2011.

‘We’ll all miss it,’ she said, ‘but I think you underestimate the longevity of the books and the series. I don’t think it’s going anywhere fast, I think new generations of children will keep reading the books and hopefully watching the films.’

The long goodbye: JK Rowling with Rupert, Emma and Daniel, who have almost filming the last installment