"The ubiquitous brightly colored rubber bracelets will come in Kardashian-themed shapes: a letter K, a purse, a high heel, the logo of their store (Dash), a diamond ring, a perfume bottle, silhouettes of the three girls, and some really deformed looking lips. I can only wonder how many episodes into the season of Kourtney & Kim Take New York it’ll take until we see the sisters donning their own Silly Bandz." - Popwatch
Kardashian Interview on David Letterman, they mention the silly bands:
