40s - 4 Halloween Costume Ideas

1940s Halloween Costume Ideas in 2026

Structured shoulders and practical fabric, an era shaped by wartime restraint.
Vintage Mafia War
Kitty Oppenheimer
Female

Kitty Oppenheimer

Don Vito Corleone
Male

Don Vito Corleone

Rosie the Riveter
Female

Rosie the Riveter

A League of Their Own
A League of Their Own

A League of Their Own

About 40s Costumes

1940s costumes lean on structured, practical tailoring, Rosie the Riveter's iconic workwear-and-bandana look, Kitty Oppenheimer's wartime-era femininity, the A League of Their Own uniform's sporty practicality. Fabric was rationed during the decade, and that shows in the simpler, less ornamented silhouettes.

Rosie the Riveter is the fastest build here, a denim shirt, red bandana, and rolled sleeves gets you most of the way. Don Vito Corleone's suit takes more work, the tailoring needs to sit narrower through the shoulders than a modern cut.

40s Costumes: FAQ

Sporty and workwear pieces like Rosie's are easy to approximate, formal suits are harder to find in the right narrow, period cut.

Rosie the Riveter, denim, a red bandana, and rolled sleeves.

No, the silhouette and simplicity matter more than the actual fabric age.