I'm not the festival type, you know…

Grumpy Cat is set to upstage Forget 50 Cent and Depeche Mode at a major US festival. She's probably not that happy about it.

Those attending the SXSW music and film festival in Austin Texas have until 3pm on Sunday to have their picture taken with Tardar Sauce – better known as internet queen of curmudgeon Grumpy Cat.