Mark Zuckerberg's signature gray t-shirts are special ordered from Brunello Cucinelli, and reportedly cost between $300 and $400. Justin Sullivan/Getty Images
- Some of the world's most successful people are known for wearing the same thing to work every day.
- Steve Jobs was rarely seen in anything but a black turtleneck and jeans, Mark Zuckerberg typically wears either a hoodie or a gray t-shirt while working, and Hillary Clinton became known for her pantsuits.
- Karl Lagerfeld, who died on February 19, owned 1,000 versions of the same high-collared white shirt that he paired with a tailored black jacket and black sunglasses.
From tech giants Steve Jobs and Mark Zuckerberg to legendary fashion designer Karl Lagerfeld, some of the world's most successful people have been known to wear the same outfit to work every single day.
In many cases, these distinctive "work uniforms" have become synonymous with the person.
Here are nine famous work uniforms, from Steve Jobs' black turtleneck to Karl Lagerfeld's white collared shirt, black jacket, and black sunglasses.