This Severus Piton fan art contains
completo and vestito di affari.
There might also be
ben vestito persona, vestito, vestito di pantaloni, tailleur pantalone, pantaloni tuta, tuta, persona ben vestita, indumento esterno overgarment, mantello, and indumento esterno.
Ok, so I found this Music-Video a couple years ago, and well... take a look for yourself. If this does not strongly recemble a young Severus lovesick for Lily, then I don't know what to belive in.