She was just a nervous 11-year-old schoolgirl when she first appeared on the red carpet.
But yesterday it was Emma Watson the confident and vivacious young woman who was the centre of attention at the premiere of the latest Harry Potter epic.
Miss Watson, now 20, opted for a short, revealing black, see-through lace and feather dress by Rafael Lopez for Atelier Mayer, teamed with black heels by Charlotte Olympia.
Simply charming: Emma Watson looked immaculate in a Rafael Lopez for Atelier Mayer dress and Charlotte Olympia heels at the world premiere of Harry Potter and the Deathly Hallows: Part 1 in London last night
Sticky situation: Watson applied fashion tape to her back to stop her dress slipping open any further
The actress, who has played Hermione Granger in all the Harry Potter films was was joined by Daniel Radcliffe – Harry Potter – and Rupert Grint who plays Ron Weasley at the Leicester Square premiere of Harry Potter And The Deathly Hallows - Part 1.
Miss Watson, also showed off her cropped hairstyle. The actress had been wanting to cut her hair short but was only allowed to do so after the end of filming of the Harry Potter series.
Miss Watson admitted she was finding coming to the end of Harry Potter was ‘emotional’. She said ‘We are all so close and it was a great adventure but we all have to move on.’
Thousands had queued over night and braved the weather to catch a glimpse of the stars in a Leicester Square that had been transformed into a Harry Potter film set.
Best buddies: Emma with co-stars Daniel Radcliffe, who plays Harry Potter, and Rupert Grint, who stars as Ron Weasley pose together
Pictured nine years ago at the first premiere in 2001
She told Sky News: 'I don't know. I feel like I've just said goodbye to Hermione. I'd have to see how I felt at the time.'
Radcliffe, who plays the title role gave a similar response, saying working on one character for 10 years is a long time, adding it might take a bit of persuading from someone like Rowling.
Watson is currently study at Brown University in America. She insisted she did still have a passion for acting, despite reports that she may throw in the towel.
Casting a spell: Daniel and Rupert, seen right signing autographs for fans at the event in Leicester Square
In the spotlight: Radcliffe spends time with fans, signing autographs and posing for photographs
Potter mania: Hundreds of fans crowded into to Leicester Square to get a glimpse of their idols
She added: 'I've just finished filming My Week With Marilyn and I definitely have a passion for acting. 'I think that at the moment I'm just very dedicated to finishing me education.'
Harry Potter and the Deathly Hallows: Part 1, the next-to-last instalment in the film franchise about the teen wizard goes on general release on November 19.
Both in black: Harry Potter's girlfriend Bonnie Wright, who plays Ginnie Weasley and, right, author of the books J.K. Rowling, who like Watson opted for a black lace design
Double act: Tom Felton, who plays the evil Draco Malfoy and real-life girlfriend Jade Olivia who works behind the scenes on the movies. Right, Weasley twins Fred and George, played by James and Oliver Phelps
Fans may leave frustrated that they have to wait eight months for the finale. But Rowling's last book needed to be broken into two parts for the big screen, said Radcliffe.
'I was always very much in favour of it being two parts, and I think most people were, simply because we all realised there was no way you could do justice to the book and really capture the story in one film,' Radcliffe told The Associated Press.
Dressing up: X Factor contestants Katie Waissel, wearing an intricate gold dress with sheer black panelling
On song: Cher Lloyd in a white River Island dress with black tights, while right, Rebecca Ferguson looked stunning in a pleated orange dress from Aqua with matching shoes
'In the seventh book, there is very little extraneous stuff that's not actually contributing heavily to the main plot line.'
Part 1 sends Harry and pals Hermione (Watson) and Ron (Rupert Grint) outside their usual haunts at Hogwarts School of Witchcraft and Wizardry as they search for artefacts that are the key to the power of dark Lord Voldemort (Ralph Fiennes).
Team spirit: One Direction, from left Niall Horan, Zain Malik, Louis Tomlinson, Harry Styles and Liam Payne
All together: From lef, One Direction, Aiden Grimshaw, Matt Cardle, Paije Richardson, Rebecca, Wagner Carrilho, Mary Byrne, Katie and Cher
'As much as we love Hogwarts, we needed a fresh environment. We needed to be out of our comfort zones, definitely,' Watson said
And what's Voldemort aiming to get out of all of this?
Harry Potter cast members: Katie Leung (Cho Chang), Helena Bonham Carter (Bellatrix Lestrange), Evanna Lynch (Luna Lovegood)
Lovely ladies: Imelda Staunton (Professor Dolores Umbridge), Julia Walter (Molly Weasley) and Clemence Poesy (Fleur Delacour)
Here come the boys: Ralph Fiennes (Lord Voldermort), Matthew Lewis (Neville Longbottom) and Domhnall Gleeson (Bill Weasley) 533
'Everyone knows, don't they? They read all the books, don't they? They all know what he's up to: world domination, total power,' Fiennes said.Harry Potter and the Deathly Hallows: Part 2 will bring to a close one of Hollywood's most remarkable film franchises, a gambit of more than a decade by Warner Bros. to bring all of Rowling's novels to the screen before the young stars outgrew their roles.
Date night: Theo Walcott arrived with girlfriend Melanie Slade, while the film's star Helen McCrory was accompanied by husband Damian Lewis
'I don't think it'll take too long before these films do finish and finally come out for cinemas all over the world to be having 'Harry Potter' marathons, where they just play them all back to back,' Radcliffe said. 'And I imagine attendance will be huge.'
Big moment: Fans came from all over the country to wait outside at the Odeon cinema in Leicester Square
Joining in the fun: Movie-lovers got into the spirit by dressing up for the occasion
Screen icons: Radcliffe, Grint and Watson in a scene from Harry Potter and the Deathly Hallows : Part 1 with co-star Bill Nighy, who plays Rufus Scrimgeour