Lately costumes have been very *in* at our house for the 3 and 4 year old. The 4 year old, in particular. He is more often in costume than he is not! We went through a Batman phase, then a knight phase, and currently he is a crazy construction worker. Evan is not quite as dedicated as Lincoln, but he was a fan of the Batman phase:
It is good to have a bat buddy brother!
Or as these photos from Opa show, a comrade in arms: