Tom Hattin's Top hat seems to be a part of a dapper set and is made from the finest black silk signaling the superiority of those who wear it.

The top hat seems to make all who meet you address you in a formal fashion and treat you as a superior no matter where they stand in society.

Top hats and other hats fashioned with similar enchantments were mostly created by Tom Hattin a famous Wizard and Milliner 

Tom was able to use his abilities in enchanting to make hats for any who required one, however it harbored a hefty price as the enchantments placed upon his hats were that of legend and the craftsmanship far surpassed anything available to this day.

The top hat seems to seek out those of low standing seeking to improve their life and position in society.

when wearing the hat you gain the flaw "I must always look my best."

since the dapper appearance of the wearer is noticed by all you have disadvantage on stealth checks against humanoids.

Notes: Bonus: Persuasion, Disadvantage: Stealth, by a person that looks good in the hat, Container, Headwear