If you're hosting a casino-themed murder mystery party, the costumes set the tone before a single card hits the table. The good news? You don't need a Vegas budget to look like you belong at the Diamond Dollar Casino. I've pulled together costume ideas for every character in the Vegas Vendetta kit - with links to affordable Amazon picks that'll have your guests looking the part without breaking the bank.
Whether your group goes all-in on costumes or keeps things low-key, these ideas will give everyone a solid starting point. Let's deal you in.
The high rollers and casino patrons
Several characters in Vegas Vendetta are guests of the Diamond Dollar Casino - think high-stakes glamor, bold confidence, and outfits that say "I didn't come here to fold."
1. Sequin V-neck bodycon dress
This sequin dress comes in a range of colors and gives you that instant casino-floor glamor. Pair it with bold earrings and heels (or flats - you'll be mingling all night).
Why we love it: Full sequin coverage without looking costume-y. Gold or black are both strong choices.
Great for:
- Harley Highroller, who's dripping in Vegas opulence and never far from the high-stakes tables.
- Counting Connie, if Connie is a female guest - pair it with understated accessories to match their quietly brilliant energy.
- Jacky Jackpot, a former poker champion chasing a comeback who's determined to look the part.
2. Sparkly halter cocktail dress
This sparkly halter dress hits the right balance - glamorous but not trying too hard. The wrap style is flattering and easy to move in, which matters when you're mingling for two-plus hours.
Why we love it: Cocktail-level sparkle without going full showgirl. Stylish enough to re-wear.
Great for:
- Counting Connie, if Connie is a female guest - stylish without being flashy, just like someone who's there to outsmart the table.
- Jacky Jackpot, who's chasing a comeback and wants to look confident without overdoing it.
- Harley Highroller, if they prefer something a little more relaxed than full sequin.
3. The "raid your closet" look
No Amazon link needed for this one. Sloppy Stevie is the wildcard of the Diamond Dollar - big personality, bigger bets, and a look that screams "I've been at the tables since noon." Think a loud Hawaiian shirt, mismatched patterns, an unbuttoned collar, or anything slightly chaotic. The fun is putting something together from what you already own.
The entertainers
The Diamond Dollar Casino has four show-stopping performers, and their costumes are some of the most fun to put together.
4. Marilyn Monroe white halter dress
This California Costumes Marilyn dress is the one. White halter, pleated skirt, instantly recognizable. Add a blonde wig and a beauty mark and the look is complete.
Why we love it: Iconic, affordable, and gets the reaction the second you walk in.
Great for:
- Dreamy Daphne, the Diamond Dollar's Marilyn Monroe impersonator and casino entertainer.
5. Elvis jumpsuit
This Elvis jumpsuit features the embellished design, belt, and red scarf. Pair it with an Elvis wig (sold separately) and some oversized sunglasses for the full effect.
Why we love it: It's Elvis. The whole room lights up when the King walks in.
Great for:
- Elvis, the casino's charismatic officiant and nightlife host.
6. Showgirl feather headpiece
This showgirl feather headpiece instantly transforms a simple outfit. Pair it with a sequin dress (like one of the options above) or even a plain black outfit. Available in multiple color options, so you can match your party's color scheme.
Why we love it: One accessory does all the heavy lifting. No full costume needed.
Great for:
- Sultry Sugar, the Diamond Dollar's show-stopping dancer - all dazzle, all allure.
7. Velvet blazer
This velvet blazer is soft, stylish, and exactly the kind of jacket a jazz performer would wear between sets. Layer it over a black shirt and dark pants for that effortlessly sophisticated lounge-singer look.
Why we love it: Suave without trying too hard. Looks expensive, isn't.
Great for:
- Velvet Vinnie, the lounge's suave jazz performer. A velvet blazer works for anyone, but if your guest prefers a dress, pair one of the sequin options above with a feather boa for that lounge-singer energy.
The casino staff
Some of the best characters in Vegas Vendetta work behind the scenes at the Diamond Dollar. These costumes are easy to pull together with affordable individual pieces - and since many of these characters are gender-neutral, I've focused on items that work for anyone.
8. Black formal suit vest
This suit vest is affordable, adjustable in the back, and looks polished over any white button-down. Pair it with a pre-tied black bowtie for a dealer look, a necktie for an investor look, or skip the tie entirely for a more relaxed power vibe.
Why we love it: One vest, six characters. Works for all body types and genders.
Great for:
- Dex the Dealer, who commands the blackjack table with swagger.
- Newton the Newbie, still finding their rhythm, but what they lack in experience, they make up for in enthusiasm.
- Tyler "Tycoon" Sterling, the Diamond Dollar's powerhouse investor. Swap the bowtie for a necktie.
- Billy the Broker, who operates in the shadows of the casino. Keep the colors dark.
- Chief, the casino's unflappable security manager. Add a lanyard or earpiece prop to sell the security angle.
- Frank, a mysterious newcomer with sharp questions. Pair it with all dark colors and keep things understated.
9. Black waist apron
This waist apron is unisex, adjustable, and gives you that bartender look instantly. Wear it over an all-black outfit or a white shirt - either way, you look ready to pour. Tuck a bar towel over your shoulder to take it up a notch.
Why we love it: Gender-neutral, affordable, and sells the role without needing a full costume.
Great for:
- Whiskey Wynn, the Diamond Dollar's expert bartender who crafts drinks with precision and a side of sharp judgment. Since Wynn can be played by anyone, an apron over a clean outfit is the most versatile approach.
General costume tips for casino night
A few things I always tell hosts when it comes to costumes:
You don't need to buy everything. Most of these looks start with something your guests probably already own - black pants, a white shirt, a little black dress. One or two key pieces (a vest, a headpiece, a statement accessory) are usually enough to sell the character.
Share the character profiles early. When you customize your Vegas Vendetta kit, each guest gets a character profile with personality details, relationships, and backstory. The more time they have with it, the more likely they are to show up in something fun. Some of my favorite costume moments come from guests who read their profile and went "oh, I know exactly what to wear."
Gender-neutral characters are flexible by design. Several characters in Vegas Vendetta use they/them pronouns, which means they're designed to be played by anyone. Don't feel locked into a specific "look" - the character's personality and role matter more than matching a particular aesthetic.
Ready to host your casino night?
Vegas Vendetta supports 10–15 players and is set in the glamorous Diamond Dollar Casino. Every guest gets a role, a motive, and secrets to keep - and with our customization portal, you can add personal touches and in-jokes that make the night feel tailor-made for your group.
Pick up Vegas Vendetta murder mystery game and let the mystery unfold. Your guests won't see it coming, and neither will you.
