Does anyone know how to do this? or have a tutorial on this?
I think its so awesome!

http://flickr.com/photos/7518775@N04/2755475434/in/pool-14308091@N00

. . . here is a thread about the same cake . . . http://forum.cakecentral.com/cake-decorating-ftopict-605590-vertical.html . . . it is white modeling chocolate that has been striped . . . although I am not sure of the steps to achieve such perfection . . . no tips here . . . but some conversation . . . http://flickr.com/photos/7518775@N04/2595327965/

You could order a chocolate transfer sheet to get that effect.

There was recently another thread on that very cake with a whole bunch of different ideas. I'll see if I can find the link to it...