Suggestions by @catatemydog

Theo James

as #24 in Celebs who could play siblings in a movie

Score: +4

James Franco

as #24 in Celebs who could play siblings in a movie

Score: +6

Daniel Radcliffe

as #21 in Celebs who could play siblings in a movie

Score: +14

Elijah Wood

as #21 in Celebs who could play siblings in a movie

Score: +14

Demi Moore

as #23 in Celebs who could play siblings in a movie

Score: +8

Courteney Cox

as #23 in Celebs who could play siblings in a movie

Score: +5

Emma Stone

as #4 in Celebs who could play siblings in a movie

Score: +6

Sarah Hyland

as #10 in Celebs who could play siblings in a movie

Score: +8

Alycia Debnam-Carey

as #3 in Celebs who could play siblings in a movie

Score: +18

Richard Madden

as #26 in Celebs who could play siblings in a movie

Score: +7

Gus Kenworthy

as #26 in Celebs who could play siblings in a movie

Score: +2

Stanley Weber

as #22 in Celebs who could play siblings in a movie

Score: +3

Henry Cavill

as #22 in Celebs who could play siblings in a movie

Score: +16

David Corenswet

as #22 in Celebs who could play siblings in a movie

Score: +15

Hilary Duff

as #19 in Celebs who could play siblings in a movie

Score: +7

Victoria Pedretti

as #19 in Celebs who could play siblings in a movie

Score: +18

Ana Gasteyer

as #20 in Celebs who could play siblings in a movie

Score: +10

Kathryn Hahn

as #20 in Celebs who could play siblings in a movie

Score: +15

Daisy Edgar-Jones

as #18 in Celebs who could play siblings in a movie

Score: +17

Anne Hathaway

as #18 in Celebs who could play siblings in a movie

Score: +13