Can you imagine Fonzie wearing a windbreaker?

That was the look the network wanted for the character during the first season of Happy Days in 1974.

We know Arthur Fonzarelli as the quintessential greaser with slicked back hair and a leather jacket. That's his main look over the course of the sitcom's eleven seasons.

See Also

Can you name these characters from 'Happy Days'?

However, at the start of the series, ABC was afraid the Fonz's eventual look was a little too edgy for the wholesome show about the Cunningham family. 

Taking matters into their own hands, the network changed Henry Winkler's wardrobe while Happy Days creator Garry Marshall was filming another pilot in Hawaii. When Marshall returned, he was displeased with the change and told the network to sit on it. (Okay, he politely pushed the network to consider the edgier outfit as Fonzie's main staple.)

ABC agreed, but on one condition: Fonzie would have to stand next to his motorcycle while wearing a leather jacket.

That's why if you watch the first season, you'll notice the Fonz wears penny loafers and windbreakers for many scenes. But when he's adjacent to his bike, the Fonz has the full greaser look.

Thankfully, the rule was relaxed after the first season as the ratings increased and the character became a regular part of the show. Today, Fonzie's jacket is a part of the Smithsonian collection in Washington, D.C.