Here’s a fun fact: there’s actually a difference between “blond” and “blonde. And the distinction between the two words is something every good editor and proofreader should know.
Plainly, a blond is a fair-haired male, and a blonde is a fair-haired female. “Blond” is the most common between the two versions and is used as an adjective or when referring to any group of fair-haired people. Of course, use “blondes” when referring to a group of blond females.
Why do females get the extra “e”? The word has French origins that express masculine and feminine forms of the word.