We know her as "Grumpy Cat." She's the world's most famous cat after going viral online.  Her name is Tardar Sauce and she's about to star in her very first commercial.

Friskies Facebook

It's hard to tell whether "Grumpy Cat" is happy or not about her new found fame. Obviously, her owners are thrilled.

After not being able to go a day without seeing a new "Grumpy Cat" meme on their Facebook page, Tard is going to star in an upcoming commercial for Friskies.

There's no word yet on when the spot will air, but Friskies posted a few pics on their Facebook page.

Friskies Facebook
Friskies Facebook
Friskies Facebook

"Grumpy Cat" is now resting comfortably at home in Austin, TX waiting for her next miserable opportunity.