All Hallows’ Eve is just hours away—as all you procrastinators inevitably know. Still scrambling for a costume idea? Have no fear: Fortune’s devised this costume guide so you can suit up as your favorite—or at least a familiar— corporate executive! Just remember to ask for stock options in your treat bag.
Ginni Rometty, CEO of IBM
Pearls, headband, incredible posture. Accessorize with: an idiot savant named Watson.
Warren Buffett, CEO of Berkshire Hathaway
Get Buffett’s shabby-chic-billionaire look with a combover, square glasses, and rumpled suit. Remember, you literally woke up like this. Accessorize with: a ukulele.
Jack Ma, CEO of Alibaba
It’s been a big year for you, so stuffing your pockets with cash isn’t a bad idea. Smile, throw on a yellow sweater, and keep those thumbs up!
Tim Cook, CEO of Apple
Black button down; semi-rimless glasses; new sense of liberation. Accessorize with: Rainbow apple pin; shards of the glass closet you just shattered.
Marissa Mayer, CEO of Yahoo
Wear bold colors (designer of course), 4-inch heels, and a blonde bob (flip those bangs over like it’s the 90s). Couples costume opportunity: Cling desperately to Jack Ma.
Sergey Brin, co-founder of Google
Dress like you’re an Under Armour model, get your hands on Google Glass, and rock some buoyant hair (or grab a beanie). Accessorize with: a pink batmobile.
Larry Ellison, co-founder and former CEO of Oracle
Mock turtleneck, coat, devilish facial hair. Relax, you’re an ex-CEO now, and you own an island. Accessorize with: a toy boat; a minion to pick things up in your wake.
Richard Branson, co-founder of Virgin Group
Muss up and repurpose that Marissa Mayer hair. Sport a white-button down (resist the urge to do up more than a few buttons), throw on a black coat. Accessorize with: Vixenish flight attendants.
Elon Musk, CEO of Tesla and SpaceX
A black muscle tee (FLEX!). Casually bring up asteroid mining in conversation. Accessorize with: toy rocket, Tesla keychain.
Mark Zuckerberg, CEO of Facebook
Pre-IPO Zuckerberg: Shower sandals, aversion to social contact, and signature hoodie (bonus points if the hoodie is lined with cryptic insignia).
Post-IPO Zuckerberg: If you can’t speak Mandarin for 30 minutes, you should probably reconsider this one.
Jack Dorsey, CEO of Square, Founder of Twitter
Channel Dorsey’s young rebellious days with blue hair gelled into spikes and a nose ring. Or do Dorsey now, but only if you’re willing to spend thousands on a Prada suit.
Marc Andreessen, co-founder of Andreessen Horowitz
Go as Twitter’s favorite Internet wise man with a flesh-toned swim cap (add padding to imitate his prodigious dome), Jawbone acitivity-tracking wristband, and collared shirt sans tie. Exude optimism. Sweater vest optional. Accessorize with: Ben Horowitz.
Evan Spiegel, CEO of Snapchat
Untucked button-down; chinos; white sneakers. Smirk a lot, take selfies of yourself making funny faces and send (Snapchat!) them to your friends. If anyone tries to buy you a drink or pay for anything all night, decline saying, “No thanks--I hate revenue.”
Steve Ballmer, former CEO of Microsoft
Drink three Red Bulls and wear a blue button-down with ample sweat stains. VOCALIZE A LOT. Accessorize with: Clippers Jersey.
Sheryl Sandberg, COO of Facebook
Power dress and perfect blowout. Take command of the room and repeatedly deny any plans to run for office. Accessorize with: A paper chain of dolls--i.e. your DIY “Lean In Circle.”