The cat behind the curmudgeonly frown and countless internet memes has died.Grumpy Cat, who who earned millions off that now-famous sad frown that vaulted her to celebrity, died Tuesday at age 7 from complications from a urinary tract infection, according to her owners.Born as Tardar Sauce, the kitty’s journey to stardom began with a picture of that now-famous frown posted on Reddit in September 2012, according to her owner, Tabatha Bundesen.That led to product endorsements ( including Friskies cat food ), prompted Bundesen to quit her waitressing job in Arizona to start a company to capitalize on the grumpy one’s popularity, and television appearances that ranged from “Good Morning America” to commercials.She even drew crowds during appearances — including one at Tampa Theatre in August 2015 to promote the premiere of the video Happiness Finds Grumpy Cat. That appearance drew more than 500 people, including a 71-year-old woman and her three grandchildren who left Savannah, Ga., at 8:15 a.m. for the nine-hour drive but still had to wait toward the back of the line.But how do you know that you’re really reached star status? By starring in your own Christmas-themed Lifetime movie .RIP. We’ll miss that scowl that made us smile.