Mobster Costume
Step into the criminal underworld with a sharp, classic pinstripe suit.
The classic 1920s mobster is a staple of Halloween and costume parties, channeling the sharp-dressed, dangerous allure of Prohibition-era gangsters. This iconic look relies on tailored tailoring, structured hats, and vintage accessories to command authority. Whether you want to look like a high-ranking mob boss or a street-level enforcer, this guide helps you assemble the perfect outfit.
- Difficulty
- Easy
- Time
- ~20 min
- Budget
- $40–120
Try it on
See yourself as Mobster
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What you need for a Mobster costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Mobster costume — one box instead of 7 pieces.
Pinstripe suit
A matching double-breasted jacket and trousers in black or dark navy with white vertical pinstripes.
DIY: Wear a plain black suit and use fabric chalk to carefully draw thin, vertical white lines down the fabric.
Dress shirt
A crisp, button-down dress shirt in solid black, white, or dark red.
DIY: Use any collared dress shirt you already own.
Fedora hat
A wide-brimmed felt fedora in black, white, or grey, featuring a contrasting ribbon band.
Necktie or bow tie
A wide satin necktie in a solid, contrasting color like white, red, or black.
Suspenders
Button-on or clip-on elastic suspenders in black or white to wear under the jacket.
Toy tommy gun
A plastic replica of a classic 1920s drum-magazine submachine gun.
DIY: Cut a gun silhouette out of heavy cardboard and paint it matte black.
Fake cigar
A realistic-looking prop cigar, ideally with a glowing foil tip.
DIY: Roll brown construction paper tightly into a cylinder and color the tip with red and grey markers.
Rather not assemble it? See ready-made Mobster costumes at Spirit Halloween ↗
How to put it together
- 1
Put on the collared dress shirt and button it all the way to the top.
- 2
Attach the suspenders to the pinstripe trousers, then put the trousers on and secure them.
- 3
Tie the necktie with a classic Windsor knot, tucking it neatly under the shirt collar.
- 4
Put on the pinstripe suit jacket, leaving it unbuttoned if you want to show off the suspenders, or buttoned for a formal look.
- 5
Place the fedora on your head, tilting it slightly forward and to one side for a mysterious shadow over your eyes.
- 6
Tuck the fake cigar into the corner of your mouth or your jacket breast pocket.
- 7
Carry the toy tommy gun in one hand or cradled under your arm.
Makeup & hair
Keep hair neatly slicked back with high-shine pomade or gel. For makeup, a clean-shaven face or a thin, pencil-thin mustache adds a classic 1920s touch.
Mobster for couples, groups, kids & more
- couples
- Pair up as a Mobster and a 1920s Flapper in a fringed dress and feather headband.
- group
- Form a crime syndicate with multiple mobsters in matching suits, a getaway driver, and a glamorous lounge singer.
- kids
- A miniature pinstripe suit with a matching fedora and a plastic gold pocket watch.
- Plus size
- Choose a double-breasted jacket style, which provides a comfortable, structured fit and a classic silhouette.
- pet
- A small dog-sized black tuxedo vest with a tiny red bow tie collar.
Tips
- Wear comfortable, polished black dress shoes, as you will be walking around in formal wear.
- Keep your jacket buttoned when standing for photos to maintain a sharp, tailored silhouette.
- Add a white pocket square or a red carnation pin to your lapel for an extra touch of class.
- If carrying a toy weapon, ensure it has a visible orange tip if required by local laws or venue rules.
Mobster costume FAQ
- What is a classic mobster suit called?
- It is most commonly referred to as a pinstripe suit, typically featuring a double-breasted jacket and wide lapels popular in the 1920s and 1930s.
- How do you dress like a 1920s gangster?
- You need a dark pinstripe suit, a collared dress shirt, a contrasting tie, suspenders, polished dress shoes, and a felt fedora hat.
- Can women wear a mobster costume?
- Absolutely. Women can wear a tailored pinstripe pantsuit with a fedora, or opt for a stylized pinstripe skirt suit with fishnet stockings.
Did you know? The iconic 'Tommy Gun' (Thompson submachine gun) became synonymous with 1920s mobsters because it was easily disassembled and could fit inside a standard violin case.