Vulgari is a clothing store featured in Grand Theft Auto: San Andreas.
They have a branch in Rodeo, Los Santos. Judging by the outside of the store it mainly sells fashion items and clothes. The store is inaccessible to the player and plays no role in the storyline whatsoever.
The name "Vulgari" may be a play on the real life brand "Bvlgari". It also may be a reference to the English word "Vulgar" which means 'lacking sophistication or good taste'.