Tim Vapid

In the Extended Look’s dress trying scene there is a thick designer book on the table, and it says Tim Vapid. Tom Ford wrote the real one; the joke is that Vapid is GTA’s Ford, so the name lands twice, once for the fashion designer and once for the car company. The GTA Wiki notes GTA V already had a Tim Vapid store in Rockford Hills, so the designer predates the book.