The concept of the "sex symbol" in Hollywood has evolved dramatically over the decades. From classic icons like Marilyn Monroe and James Dean to modern heartthrobs like Margot Robbie and Idris Elba, the criteria for what makes a celebrity irresistibly attractive to fans seems to be in constant flux.

Some argue that today's stars have it easier than their predecessors - with social media allowing them to cultivate their image and connect directly with fans in ways that were never possible before. Others believe that the mystique and glamour of old Hollywood will never be matched. Where do you stand?

What defines a true sex symbol in your eyes? Is it raw charisma, physical beauty, or perhaps a certain je ne sais quoi that can't quite be put into words? And which celebrities past and present do you think have best embodied that intoxicating "it factor" that drives fans wild?

Let's dive into the cultural phenomenon of celebrity lust and attraction. I'm curious to hear which stars you've crushed on over the years and what drew you to them. Do you think the nature of celebrity sex appeal has changed for better or worse? Sound off in the comments!