When it comes to culinary trends, cupcakes may have jumped the shark a long time ago. Free cupcakes, on the other hand, never go out of style. Hello Cupcake in Dupont Circle is celebrating its second birthday tomorrow and will be handing out a free cupcake to anyone who stops by after their doors open at 10 a.m. The shop, which is located at 1361 Connecticut Avenue NW, will be passing out complimentary treats until they run out — based on our previous experience with such giveaways, you may want to plan on getting there as close to 10 as possible.