1) Attractiveness 2) Best-dressedness 
A spiff, SPIF(Sales Performance Incentive Fund) or spiv is an immediate bonus for a sale. Typically, `SPIFs` are paid, either by a manufacturer or employer, directly to a salesperson for selling a specific product. ==Origin== An early reference to a spiff can be found in a slang dictionary of 1859; `The percentage allowed by drapers to their yo......
A cash incentive, contest entry or prize given by a dealership to salespersons as motivation to sell vehicles.
See push money. 
A commission paid by a manufacturer or supplier to encourage salespeople to sell their product rather than a competitors
[n] - attractiveness in appearance or dress or manner
noun attractiveness in appearance or dress or manner; `he gets by largely on pure spiff`