Suggestions by @kittycat02

Nicole Kidman

as Miss Allison in Luann (1997 feature film)

Score: +2

Gaby Hoffmann

as Scarlett Worthington in Luann (1997 feature film)

Score: +2

Bill Murray

as Frank DeGroot in Luann (1990 TV Movie)

Score: +2

Sally Field

as Nancy DeGroot in Luann (1990 TV Movie)

Score: +2

Amanda Seyfried

as Teen Luann (2000s) in How I think Luann DeGroot would be cast throughout the decades

Score: +2

Steve Martin

as Frank DeGroot in Luann (1997 feature film)

Score: +2

Crystal McKellar

as Ashley Hill in Luann (1990 TV Movie)

Score: +2

Cherie Johnson

as Younger Delta (early 1990s) in How I think Delta James would be cast throughout the decades

Score: +2

Kirsten Dunst

as Ashley Hill in Luann (1997 feature film)

Score: +2

Tatyana Ali

as Amber Clarke in Luann (1997 feature film)

Score: +2

Tasha Scott

as Amber Clarke in Luann (1990 TV Movie)

Score: +2

Cherie Johnson

as Delta James in Luann (1990 TV Movie)

Score: +2

Jason Hervey

as Brad DeGroot in Luann (1990 TV Movie)

Score: +2

Monica Keena

as Teen Luann (2000s) in How I think Luann DeGroot would be cast throughout the decades

Score: -1

Patrick Labyorteaux

as Brad DeGroot in Luann (1990 TV Movie)

Score: 0

Meryl Streep

as Ms. Phelps in Luann (1997 feature film)

Score: +2

Chevy Chase

as Mr. Fogarty in Luann (1997 feature film)

Score: +2

Candace Cameron Bure

as Diane in Luann (1997 feature film)

Score: +2

Susan Sarandon

as Nancy DeGroot in Luann (1997 feature film)

Score: +2

James Denton

as Frank DeGroot in Luann (1997 feature film)

Score: -1