Cat's (grumpy) meow

Grumpy Cat aka Tardar Sauce is an Internet sensation.

Fans turned out by the hundreds to see burgeoning media star Grumpy Cat earlier this week at the Kitson store in Santa Monica, California. Event organisers expected at least 500 people would line up for a chance to see Ms Cat; they estimated more than 800 showed up for a pawtograph by the sour-looking puss.

The feline celebrity, who became a viral star last year, already has a movie deal in addition to Grumpy Cat: A Grumpy Book, which arrived on shelves this week.