Harry Potter star Daniel Radcliffe, who admits he has had trouble finding a girlfriend, was smitten when he locked eyes with a beautiful Australian girl at a film function in Sydney.

But who was she? The 18-year-old boy-wizard star walked around groups of party-goers afterwards but failed to find her.

Now the blue-eyed blonde who is convinced she is the girl who stole Radcliffe's heart has come forward, admitting that throughout the awards evening she and Radcliffee were "sort of smiling and making eye contact".

What's more, she is now preparing to fly to London next week.

But 20-year-old insurance worker Cassie McKay has some bad news for the Harry Potter star.

She has a boyfriend, to whom she remains committed.

And her journey across the world is for a four-month holiday she planned months ago.

Once more, it seems, Radcliffe's hopes of finding a girlfriend who isn't a gold digger who is after him for his fame and money, have been dashed.

Speaking in London before Cassi stepped forward as the possible girl of his dreams, Radcliffe told of his love of "brilliant" Australian women - and the one in particular he met backstage during the film awards ceremony.

"There was one girl there, oh my god, she had eyes that just looked at me like she wanted to pounce on me," he said.

"She stared at me the whole night and I was going to get her number and then I couldn't find her.

"I must have walked around that party for an hour trying to look for this girl, like some sad pathetic dweeb but it would have been worth it."

The Sydney newspaper reporter who interviewed him asked if his paper could help to find her.

Radcliffe, who is worth an estimated 20 million, is said to have blushed and regretfully shaken his head.

"I don't know. I don't know her name, I can't remember her name. It was one of those things but she was stunning."

But when his story was published, Cassie, who was one of the musicians performing at the film night, came forward, convinced she was the girl he was talking about.

It was her mother who had prompted her.

"I think he's talking about you," she told her daughter.