In her 80s and still slaying...

Maybe 80 is the new 30, because that's precisely what Martha Stewart said. 

The billionaire, aged 81 recently became the oldest Sports Illustrated swimsuit cover star and looked smoking!

Stewart was one of four cover models chosen for the issue, alongside Megan Fox, Kim Petras and Brooks Nader. 

She was photographed in various swimsuits in the Dominican Republic, and said she wanted to inspire other women. 

"I don't think about age very much, but I thought that this is kind of historic and that I better look really good.

"My motto has always been: 'when you're through changing, you're through', so I thought, why not be up for this opportunity of a lifetime?

"I hope this cover inspires you to challenge yourself to try new things, no matter what stage of life you are in. Changing, evolving, and being fearless - those are all very good things, indeed", she said.