Hello Kitty even makes money rockin' out. Last year, Sanrio teamed up with Beats by Dre to produce special edition headphones ($250) and earbuds ($150) to celebrate Hello Kitty's 40th birthday. They debuted at Hello Kitty Con in Los Angeles, a four-day affair teeming with ultimate Hello Kitty fans, and are now for sale worldwide.
Hello Kitty Con itself was a wild success. The event featured everything from Hello Kitty-themed food trucks to permanent (and temporary) tattoos.
