We all know the Roady is the newest member of the YSL family to cause a commotion among handbag addicts. It's already being toted around by the likes of Rihanna, Rachel Bilson, Leighton and of course, MK. I have admired the hobo carryall from a distance on their arms, and on mine in my daydreams. The bag already comes in a bunch of colors and patents, but YSL is taking it to the next level in…