Celebrity chefs are some of the biggest names in the culinary biz.

It’s also common for massive celebrities to have their own personal chefs.

For example,Rihannahas one, and so doesJustin and Hailey Bieber.

Martha Stewart smiling

The late Princess Diana even sharedan amazing relationshipwith her personal chef before her death.

What’s really interesting is when personal chefs and celebrity chefs are one and the same.

According toThe New York Post, Vivaldo has worked for such stars as Sly Stallone and Suzanne Somers.

Jennifer Lopez in orange

Hello Magazinealso breaks down some celebrities' well-known personal chefs.

“They’re so disciplined,” Schaffer said of celebrities' relationships with food.

“Currently paleo is popular, as well as raw food and zero-carb diets.”