Calvin Klein is launching a new bra collection called Push Positive this fall and has tapped model Lara Stone as the face body of the line.  Shot by Steven Klein in New York City, the black and white images show Stone in the superior-fit bras.  What’s so special about the Calvin Klein Push Positive collection is that the bras have a unique butterfly shape created with soft-wire technology.  It will come in cup sizes 32A to 36D and retail for $48.