The World's Grumpiest Cat Has Died

The internet sensation Grumpy Cat has died.

The family of Grumpy made the announcement on Friday.

Grumpy had been suffering from a urinary tract infection that became "too tough for her to overcome" on Tuesday.

"Despite care from top professionals, as well as from her very loving family, Grumpy encountered complications from a recent urinary tract infection that unfortunately became too tough for her to overcome," the family said in a statement.

"Besides being our baby and a cherished member of the family, Grumpy Cat has helped millions of people smile all around the world -- even when times were tough."

Grumpy's famous face made her a viral sensation, amassing 1.5 million followers on Twitter and 2.4 million followers on Instagram.