Daniel Radcliffe braved torrential rain and hail at the world premiere of "Harry Potter and the Half-Blood Prince" in London's Leicester Square last night.

The 19-year-old star spent an hour signing autographs for some of the 3,000 screaming fans who had been camping next to the red carpet for more than 24 hours.

Daniel Radcliffe can't talk to girls. The "Harry Potter" star says gorgeous women queue up to talk to him, but lose interest as soon as they hear him speak.

The 19-year-old actor said: "I'm a terrible person to be a sex symbol. I'm no good at flirting with people. The lust thing generally stops when they meet me, because I'm not a particularly sexy person to talk to. I'm not good at chit-chat. I can't do pick-up lines."

Michael Jackson has invited stars of the "Harry Potter" films to the opening night of his "This Is It" shows. The three main stars from the wizard franchise - Daniel Radcliffe, 19, Emma Watson, 18, and Rupert Grint, 20 - have reportedly been offered access all areas passes for the start of Michael's "This Is It" farewell residency at London's O2 arena on July 8.

A source told Britain's The Sun newspaper: "Michael is a huge fan of the 'Harry Potter' books and films."

JK Rowling earns $5 million a week. The "Harry Potter" author's incredible earnings - equivalent to $8 a second - are from the 375 million sales of the seven books in the popular children's series, a percentage of revenue from the movie adaptations and spin-off merchandise, including toys and video games, according to financial bible Forbes.

JK - real first name Joanne - is believed to be worth around $1 billion and is expected to see her earnings soar even further, with three more "Harry Potter" movies scheduled for release.

Daniel Radcliffe struggles to tie his own shoelaces - because of a medical condition.

The "Harry Potter" star has revealed he has the condition dyspraxia - a common neurological problem which causes sufferers to have difficulties planning any sequence of coordinated movements - and can sometimes struggle to complete the most basic of tasks.

Daniel Radcliffe has revealed he will appear naked in the next Harry Potter film.

The actor - who has starred as the teen wizard in five movies in the franchise based on the books by J.K. Rowling - admits he was unsure when he was told he would be appearing without trousers in a scene in "Harry Potter and the Deathly Hallows."