Daniel RadcliffeDaniel RadcliffeWe've figured out why Daniel Radcliffe always looks so happy.

And it's not because he's just learnt a new spell.

The Harry Potter star and his (you may want to sit down) £14m personal fortune have landed him a place on the Sunday Times Rich List.

In fact, at 17 he is the youngest person to appear on the coveted list, which names the country's top 1000 millionaires.

Philip Beresford, who compiled the list, explained why Dan's wealth has shot up by an estimated £8m:

"Money has been pouring in to his personal company, largely from royalties he is paid every time the films are shown on TV.

Joss StoneJoss Stone"He may also have negotiated a share of the profits from the films or a share of the merchandising money."

The youngest lady on the list is 19-year-old Joss Stone, who is said to be worth around £6m.

Other young 'uns to feature are Wayne Rooney and Coleen McLoughlin, worth approximately £20m - and rising rapidly.

Betcha they're trying to catch up with the Beckhams - they're worth an estimated £87m.