Trove is for buying and selling costumes for Halloween or fan conventions.

This is where we’re at.

DCist has put together this handy list of D.C.-centric costumes to impress people at whatever Halloween function you may find yourself at in the next week. You’re welcome.

Halloween: it’s complicated, you know? Trying to find that right costume is always an adventure. That’s why we thought we’d give you a few ideas that your fellow Washingtonians will probably approve of.

Photo by dracisk.Hello Cupcake will be giving away a free cupcake to those who come into their Dupont shop in costume, today from 4-7 pm. Sounds like a good stop on your way home from the rally, where you’ll likely be exhausted and in need of sugar. And, if you can’t make it today, they are doing a Halloween costume contest that has a pretty sweet prize. Upload a photo of yourself in your…

Image courtesy Montgomery County police An armed robber wearing a creepy skeleton mask got away with a bag of cash on Tuesday morning from the SunTrust bank branch located at 8510 Connecticut Ave., in Chevy Chase. Montgomery County police say the suspect fled in a white sedan driven by another person, and that the two later switched to a black Mercedes Benz. It’s a wonder more bank robbers don’t wear terrifying Halloween masks, isn’t…

So President Barack Obama and First lady Michelle Obama opened up the White House to trick-or-treaters on Saturday, which is pretty cool. Kids from 11 D.C. area schools were invited to come by and meet the first couple as they handed out this administration’s version of a Halloween treat: White House M&Ms, a sugar cookie, and … you guessed it, dried fruit. Talk about boo. Michelle is clearly dressed up for the holiday here,…

Photo by Tracy Lee. No, you cannot be Balloon Boy. Seriously. That said, I’m sure that there are more than a few of you with full slates planned for the 31st. Similarly, there’s probably a large percentage of you who have put absolutely zero thought into proper attire for said evening. This is about as unacceptable as giving people a twelve-pack of gum from Walmart for the holidays because you just simply forgot that…

We thought we’d take a minute to share some of the DCist staff’s best and/or most ridiculous costumes from this past weekend. If you’ve got Halloween costume photos you’d like to share, tag them on Flickr with “dcist” and “halloween.”…