Harry Potter and the Prisoner of Azkaban: In recent talks with Reuters, Harry Potter and the Prisoner of Azkaban director Alfonso Cuaron talked about how he'd like to see Warner Bros. keep the same talent involved for all of the Harry Potter films...

Despite speculation that the young stars of the Harry Potter films will outgrow their roles, the director of the latest installment believes they can see the popular series through to the end. RELATED: Chris Columbus Confirms Robin Williams Wanted to Play Lupin in the Harry Potter Movies

"It would be amazing to have the whole series with the same kids," Alfonso Cuaron, whose "Harry Potter and the Prisoner of Azkaban" opens worldwide on June 4, said on Tuesday.

"It would be priceless. It would be something very special, for the ages."

Daniel Radcliffe (Harry) and cinematic sidekicks Emma Watson (Hermione) and Rupert Grint (Ron) have so far maintained their enthusiasm for the work, but many wonder whether they will physically outgrow the characters.

The trio, who sign for one film at a time, have already begun work on the fourth movie, "Harry Potter and the Goblet of Fire," directed by Mike Newell ("Mona Lisa Smile" and "Four Weddings and a Funeral").

The fifth book, "Harry Potter and the Order of the Phoenix," was published last year.

In the next movie, the young wizards are supposed to be 14 years old, which matches Watson's age. Radcliffe will turn 15 this summer and Grint will turn 16.

Cuaron said it would be a landmark achievement for the trio that created the roles to make it through to the end.

"Right now they're doing No. 4. There's only three more to go. I just hope they keep the same cast for the whole thing," said Cuaron, adding he would love to direct them again.

"So far, they're holding up very good, the way that they are aging. I don't think Dan is going to get way much taller or suddenly grow another eye. Same with Emma, and Rupert is OK."