Here are the ten trends that L'Avvocato kickstarted in his time and that we can still see on the streets today.
From: Esquire UK
He was an original, a rule-breaker, a true master of all things sartorial. He was also an innovator.
Agnelli was legendary for his sense of calculated nonchalance, as evidenced by his ever-askew necktie. Was it intentional? Quite possibly. But we like to think that he either never owned a mirror, or couldn't be bothered to knot the damn thing up more than once.
The Italian entrepreneur was never one to shy away from a good idiosyncratic style tick, and so it's no surprise that he often forwent buttoning his button-down collar, especially on those casual days when he skipped a tie altogether.
Some might call this move sacrilege, but Agnelli loved the look of tie loafers with a suit, using the more casual slip-ons as a way to add a bit of ease to the traditional business uniform.
In what's considered by many the most famous photo of Agnelli, L'Avvocato served as Jackie Kennedy's escort during her visit to Italy. But the real star of the shot? His spread collar popover, which has become something of a menswear holy grail since.
Later in life, Agnelli began to abandon his signature suited looks in favour of more casual styles, some of which included washed-out denim. In modern parlance, we call these dad jeans, and they are generally looked down upon. Or maybe they aren't. Either way, the man was a modern day style prophet.
One of the Agnelli's most well-known contributions to modern style was bringing hiking boots off the mountain and into everyday life. Whether it was in the boardroom or on the sidelines, he placed a newfound focus on the footwear, one of aestheticism over utilitarianism. The rugged boot hasn't lost its regal air since.
It started as a way to call attention to his bespoke jackets, but eventually, unbuttoned surgeon cuffs became a cornerstone of Agnelli's signature look. Today, it's probably the quirk that's seen most amongst the menswear masses.
As one of Italy's most successful businessmen, the industrialist claimed that he never had a moment to rest... nor to peel back his shirt cuff to check his watch, which lead to this now-infamous move.
Long before they were fodder for Ralph Lauren campaigns, denim western shirts were beloved by Italians for their soft-washed feel and worn-in look.
Some say Agnelli's style was all about trying very hard to look as if he wasn't trying at all, but here we see that it's possible Agnelli truly didn't care—at least not about the rules. Just look at him here: he's wearing what looks to be racing coveralls, a bottle-cap belt, oversized sports shades and …an ascot? Yep. An ascot. Sure, it looks a bit madcap, but it's that impulse to break the rules when and how we see fit that's made menswear to vital in the years since Agnelli's reign.