Vivienne Westwood Worn By Pharrell Williams

To conclude the list of most expensive celebtiry hats, we mention an item from Pharrell Williams, which is Vivienne Westwood hat. After Pharrell's 2014 Grammy performance, the Vivienee Westwood hat went viral, inspiring photoshop tributes and even its own Twitter spoof account.

Fast-food chain Arby's purchased Pharrell Williams' huge brown fedora at the Grammys for $44,000, right before he performed at the Oscars in a black version of the famous Vivienne Westwood hat. After all, the black "mountaineer" hat cost $180 when it was first released. The hat was all the rage for a while after Williams wore it, and Williams was able to give it for auction. All the profit was donated to the non-profit One Hand to Another.

"Can we have our hat back?" Arby tweeted at Williams during the Jan. 26 music awards show. "We're HAPPY to support a great cause & get our hat back," Arby tweeted, referring to Williams' popular song Happy.

Twitter users noted that Williams did not attend the Academy Awards wearing the hat, though he did receive criticism on social media for his tuxedo shorts.

Price: $44,100