Harry Potter actors Emma Watson and Rupert Grint WILL join Daniel Radcliffe in the final two films, say producers.
Daniel, Rupert, and Emma made their screen debuts as the young Harry, Ron and Hermione in Harry Potter and the Philosopher's Stone in 2001.
Warner Brothers boss Jeff Robinov said it would be "inconceivable" to get anybody else to play the roles.
Daniel's role was confirmed earlier this month, but there had been rumours that Emma would not return.
The trio have already appeared in four movies together, and will star in the fifth Potter film, The Order of the Phoenix, in July.
This is what they looked like when they first got the parts in 2000.
Now fans can relax in the knowledge that they will also return for The Half-Blood Prince, scheduled for release in November 2008, and The Deathly Hallows.
Mr Robinov said: "Through the years we have watched them grow into extraordinary young adults, as well as remarkable actors.
"It would be inconceivable to imagine anyone else in the roles with which they have become so identified, so we are thrilled and proud that Daniel, Rupert and Emma have chosen to complete the arc of their characters in the final two films."