"After the release of the cellulite/stretch marks," Izzie tells me, "the response was huge and many people requested stretch marks on breasts, arms, stomach as well, so I made them. " She had planned on creating them before the cellulite/stretch marks went on sale. "I was just waiting to see how the response would be before I release more of something that nobody wants," she says, laughing. "I'm glad people enjoy them."
Today, in fact, you can get them for just 50 Lindens (roughly 25 US cents) for Fifty Linden Friday in Izzie's in-world store. (Teleport here). You can see the before and after the break (NSFW, obvi), illustrating how Izzie's enhancement turns an avatar's breasts into something that much more resembles the breasts of an actual woman:
Hat tip: Cassie Middles