Prior Design recently reveiled its plans for a wide-bodykit for the BMW 1 Series. This bodykit applies to both the coupe (E82) and the convertible (E88), but not the 1M Coupe.
The package consists of changes to almost all parts of the exterior. You can see the slightly modified front bumper, side skirts, and the rear bumpers. The front and rear fenders are also redone, giving the 1 series a much wider look than the stock.
All these goodies are priced at 2,999 EUR or about $4000 for US. Prior Design is also offering a trunk spoiler, with mounting materials included, for 299 Euro or $399 US.