Kimmy and her sisters Khloe and Kourtney hit up Sears in LA yesterday to sign autographs at the launch of their new clothing line, Kardashian Kollection. The ladies were met by quite the crowd and Kim had a customized camera on deck to get some shots of it all. And of course she showed off that huge ROCK on her finger too! Check out the cam..and the ring..below.

Marisa Mendez