Grown-Up Daniel Radcliffe Shoots Scenes for 'Harry Potter and the Half-Blood Prince'

Filming was under way Thursday for "Harry Potter and the Half-Blood Prince," the sixth movie in the hit series, and a production still from the film shows just how much star Daniel Radcliffe has grown up since the first Potter flick.

Click here to see Radcliffe in the new film

Warner Brothers crews pitched tents around the grounds of Gloucester Cathedral and neighboring King's School last month, according to reports.

This will be the third time the school and cathedral grounds have been used for the Potter movie series, with "The Philosopher's Stone" and "Chamber of Secrets" both filmed there.

A total of 174 students from King's School, aged 11 to 18, are starring as extras in the production based on J.K. Rowling's book.

Radcliffe, who turned 18 over the summer, was 11 when he was first cast as the schoolboy wizard. British newspapers have estimated that he has a total net worth of $35 million.