While her husband was clad in a custom Givenchy outfit and 12-year-old daughter Blue Ivy, also in attendance, wore a custom Vivienne Westwood Couture dress ... and a Stetson cowboy hat.

Stetson cowboy hats are an iconic American accessory. The popular Skyline style will cost you $245, while other premium varieties can set you back $5,000. Over the years, famous figures like ...