To celebrate/mourn our youth, let's take a walk down memory lane to see how much the cast has changed in 15 years.
Robert Pattinson as Cedric Diggory
Clémence Poésy as Fleur Delacour
Bonnie Wright as Ginny Weasley
James and Oliver Phelps as Fred and George Weasley
Tom Felton as Draco Malfoy
Matthew Lewis as Neville Longbottom
Alfred Enoch as Dean Thomas
Maggie Smith as Professor Minerva McGonagall
Brendan Gleeson as Mad-Eye Moody
Michael Gambon as Professor Albus Dumbledore
Gary Oldman as Sirius Black
Timothy Spall as Peter Pettigrew
David Tennant as Barty Crouch Jr.
Miranda Richardson as Rita Skeeter
Shirley Henderson as Moaning Myrtle
And finally, Ralph Fiennes as Lord Voldemort
Welp, I feel 1,000 years old. Cheers.