The queue for the auditions went on and on. Some of the girls have been lining up since yesterday evening to get their couple of minutes in front of the casting director. Thousands of young actresses traveled to London to try and win a part in the next Harry Potter film. Producers are looking for a thirteen to sixteen-year-old girl to play Luna Lovegood, a trainee wizard and friend of Harry's.

Unidentified Girl: Oh~Well, she's ur, very like a random sort of person, she'll burst out laugh. She's really unusual. She's been in an outcast movie other than Harry Potter. She's very different to the other characters.

Unidentified Girl: She's quite unique. She's her own person and she believes in what she wants to believe, or, and, picks up what people tell her.

They were told to leave any costumes or make-up at home. The casting director wanted to see them completely natural.

Unidentified Girl: Hi, Harry. I'm Luna Lovegood. You might like vice the quibbler I can be.

Unidentified Girl: Hi, I'm Luna Lovegood. How are you?

Unidentified Girl: Hi, Harry. I'm Luna Lovegood. Could we do quibbler?

First, which of you can tell me how many unforgivable curses there are?

The Harry Potter films have made stars of Danial Radcliff and Emma Watson. Whoever eventually wins the part of the Luna will no doubt be hoping it does the same for them.

Even given the popularity of Harry Potter, it is still staggering how many people have turned up here to audition. The queue behind me goes on for as far as the eye can see and well beyond that. To give you an idea of how many people have come down here, one man said it took him 15 minutes to walk from the back of the queue to the front.

Today was just the first of many rounds of auditions. Some already know they haven't got through.

Unidentified Girl: I've already been in there, and they didn't choose me. Well, well. Luck comes, Luck goes.

But for others, the dream of being in a Harry Potter film is still very much alive.

Victoria Bryning, Sky News, Central London.