What a magic little number! Emma Watson wipes away her tears and changes into a short frock to sparkle at Harry Potter afterparty

Newly teetotal Daniel Radcliffe was a no show at the afterparty

By Daily Mail Reporter

Last updated at 9:39 AM on 8th July 2011

She started her night in a floor-length tiered Oscar De La Renta gown but Emma Watson ended it with a bang in a shorter Elie Saab frock at the Harry Potter premiere afterparty.

It was a night of celebration and emotion as Harry Potter and the Deathly Hallows Part 2 afterparty kicked off at Old Billingsgate Market in London, but despite shedding a few tears at the premiere, Emma Watson held her head high as the night continued.

The actress, who plays Hermione Granger, appeared to have a glittering theme for the night and despite changing outfits from the premiere to the afterparty, she sparkled like a diamond in both silver dresses.

The magic little number: Emma Watson sparkled in the short Elie Saab frock at the Harry Potter premiere afterparty at Old Billingsgate Market in London

Quick change: She started her night in a floor-length tiered Oscar De La Renta gown (right) but Emma Watson ended it with a bang in Elie Saab (left)

The 21-year-old accessorised her Elie number with Chopard earrings and peep-toe heels, to add that little extra bit of magic to her ensemble.

She then changed into a third and final outfit for the night, consisting of a little black dress, to head back to her hotel.

Also letting their hair down at the afterparty were her fellow co-stars Rupert Grint, Tom Felton and engaged couple Bonnie Wright and Jamie Campbell Bower.

But Harry Potter's star Daniel Radcliffe was a no show at the event, which saw Chloe Green and Sam Branson turn up for a celebratory drink.

Perhaps his lack of party spirit was due to the fact that the actor has given up alcohol, after recently admitting that the pressures on fame had made him dependant on drinking.

Round three! Emma Watson then changed into a third and final outfit at the end of the night, which consisted of a little black dress, trench coat and ballet flats

Looking sharp: Rupert Grint, who plays Ron Weasley in the franchise, looked dapper in his suit, while Emma Roberts made a special appearance in black and tan

Home time: Emma Roberts was seen leaving the party with Glee actor Chord Overstreet, who plays Sam Evans on the hit series

Emma Roberts also sneaked in for a special appearance and looked gorgeous in a black and tan knee-length dress.

Jonathan Ross and his wife Jane Goldman also joined the actors in their evening of celebrations and the Harry Potter fans arrived at the afterparty with smiles on their faces.

Harry Potter and the Deathly Hallows Part 2 premiered at Trafalgar Square yesterday marked the end of an era as the cast and crew celebrated the last film in the franchise.

Emma, Rupert and Daniel Radcliffe, who grew up on the sets were hit with emotion as they paid tribute to the final film.

Miss Watson welled up as she and her co-stars thanked fans and each other for an amazing experience.

Here come the girls: Helena Bonham Carter (left), Pixie Geldof (centre) and Eliza Doolittle (right) all arrived in a selection of colourful gownsv

Here come the girls: Helena Bonham Carter (left), Pixie Geldof (centre) and Eliza Doolittle (right) all arrived in a selection of colourful gowns

Couples' night out: Tom Felton spent the night arm in arm with his girlfriend Jade, while Made In Chelsea star Ollie Locke arrived with Chloe Green

Couples' night out: Tom Felton spent the night arm in arm with his girlfriend Jade (left), while Made In Chelsea star Ollie Locke arrived with Chloe Green (right)

Loved-up: Engaged couple Bonnie Wright and Jamie Campbell Bower were all smiles (left), while Jonathan Rossand his wife Jane Goldman also joined the actors in the celebrations (right)

When Emma couldn’t contain her tears any longer, the film’s producer David Heyman offered her his shoulder to cry on.

Speaking with his co-stars, Harry Potter star Daniel said: ‘I don’t think the end of the story happens tonight because each and every person who will see this film will carry this story with them through the rest of their lives.

‘A huge thank-you to all of you, first of all for giving me a job and Jo for letting him give me a job.

‘Every opportunity I get from now on all goes down to the fact I got very, very lucky when I was eleven.’

Ladies' night: Evanna Lynch (left), who plays Luna Lovegood in the Harry Potter series sparkled alongside Emma (centre) and Chloe Green (right) at the party

Ladies' night: Evanna Lynch (left), who plays Luna Lovegood in the Harry Potter series sparkled alongside Emma (centre) and Chloe Green (right) at the party

Cheers! Isabella Anstruther-Gough-Calthorpe, Prince William's ex girlfriend, arrived with Sam Branson, while Matthew Lewis, who plays Neville Longbottom in Potter arrived with his girfriend

Emma interjected by saying: ‘You didn’t get lucky – you were and are the perfect Harry and will be forever.’

While author J.K. Rowling told Daniel and fans that it’s not the end, seeing as the series will always live on in their hearts.

And Grint, who plays Ron Weasley, took the opportunity to thank the author for what she had done ‘for ginger people’ in front of the screaming crowds.

Emma 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.’