There are 2 main areas for shopping in Brasilia:

On the main fuselage of the plano pilato, you have Conjuncto National which contains a variety of small shops an department stores, such as Sears. Parking is available above the bus station.

The other area is just off the South Wing and it is called Park Shopping. This is more like your stereotypical American mall, there is plenty of  parking. Inside you will find a range of shops cafes and a multi screen cinema. They also had an ice rink in the 1990's.