People can't get enough of the Angry Birds video game. It's one of the most popular smartphone games ever. The Angry Birds Blue Bird Adult Costume. This oversized shaped tunic is light blue and features a yellow beak, white eyes, and red cheeks printed on the front. There's a black tail and a blue plume on top. A hole in the front exposes your face and there's a hole on either side for your arms. Pants and shoes not included. The officially licensed costume is so simple to wear since you can throw it on over any clothes. The Angry Birds smartphone game features different types of birds that are slung with a sling shot at structures built by their enemies, the pigs. The blue bird is popular because it can split into multiple birds and hit several targets. You won't be able to split when you wear the Angry Birds Blue Bird Adult Costume, but you will definitely be a hit at any costume party you go to.