each samba school is divided into asas (wings or groups), and each of these groups has a different costume - these groups are easily identifiable in any parade.

scoring by the judges is based on creativity, significance to the plot, use of color, use of materials, finishes, details, and uniformity.

making costumes for the sambódromo and for the rest of the carnival festivities is a big business - twelve months in the making, the costumes must all be original designs as are the floats, and they are strictly kept secret until the day of the parade.