Carsten Riewe built this Aliens costume for the "Karneval" party in his hometown in Germany. If you're wondering where exactly that is, it's bay 12, please.
That's Carsten inside the suit. The "driver" is his 13 month-old daughter, strapped to his chest. The sound effects aren't dubbed over the clip; inside the rear of the suit was a boombox that looped sound effects from the movie.
He says it took 100 hours. Looks like it was worth every second.