Suggestions by @the_advanced_caster

Josephine Langford

as Heather McNamara in Heathers (Advanced Casting)

Score: +1

Kiernan Shipka

as Heather McNamara in Heathers (Advanced Casting)

Score: +1

Sydney Sweeney

as Heather McNamara in Heathers (Advanced Casting)

Score: +1

Olivia Holt

as Heather McNamara in Heathers (Advanced Casting)

Score: +1

Lizzy Greene

as Heather McNamara in Heathers (Advanced Casting)

Score: +1

Elle Fanning

as Heather McNamara in Heathers (Advanced Casting)

Score: +1

Sabrina Carpenter

as Heather McNamara in Heathers (Advanced Casting)

Score: +1

Peyton List

as Heather McNamara in Heathers (Advanced Casting)

Score: +1

Millie Bobby Brown

as Heather McNamara in Heathers (Advanced Casting)

Score: +1

Sophie Thatcher

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Brenna D'Amico

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Gideon Adlon

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Landry Bender

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Ciara Bravo

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Cailee Spaeny

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Diana Silvers

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Kira Kosarin

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Mary Mouser

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Maude Apatow

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Isabelle Fuhrman

as Heather Duke in Heathers (Advanced Casting)

Score: +1