15 1-and-Done Halloween Costumes You Won't Be Embarrassed to Wear to Work

A skeleton is the most classic Halloween motif. If you're looking for a truly one-and-done costume, this H&M dress is perfect for you ($25). Wear with black tights and black ankle boots.

There will be plenty of people in the office dressed as a cat, so go the opposite route as a bat. This black bodysuit by Nasty Gal ($36) can be worn with black shorts or jeans, depending on how risqué you want the outfit to look.

Go around saying, "I'm a mouse, duh" in this Wildfox hoodie ($150).

It's not often you see a zebra, so stun all your coworkers with this printed black-and-white stripe dress from Asos ($64).

Unicorns do exist! At least on Halloween. Roll out of bed right into your cozy Boohoo onesie ($18, originally $36).

To all the baseball babes out there, show off your sporty side at work with this Forever 21 jersey ($10, originally $16).

Transport yourself back to the 1920s in this white fringe dress from Unique Vintage ($78).

Get cheeky with this "My other costume is at the dry cleaner" Wildfox tee ($70).

If you're known in the group as the ultimate Halloween lover, you definitely need this Halloween-theme Xhilaration dress ($19, originally $25).

Cat ears were so last year. Be a bunny this year instead with Topshop's cool vinyl headband ($20).

Incorporate your baby bump into your costume on Oct. 31 with this Asos skeleton sweatshirt ($35).

You're not a true Belieber until you have this tribute collection shirt ($40).

Fulfill your high school fantasy of being a cheerleader with this H&M cropped top ($18).

Who wouldn't want to channel Wonder Woman in this Union Suit from Target that's comfortable as can be? ($28)

Ran out of time to think of a costume? Throw on this funny Nasty Gal t-shirt ($30) and call it a day.