As a manager, Greene uses her own youth (she just turned 30) to her advantage. “I have a really good pulse on what’s hip and cool,” she says. At Monster Talent, she brings fresh energy while Bob Noll (“my mentor and boss”) represents experience. By keeping her client list small, Greene is able to give her clients personal attention — one reason “Shake It Up” star Zendaya works exclusively with Greene, and has no agent. Greene went to every taping of “Dancing With the Stars” last season, where Zendaya finished second. “I love my job. I can sit around eating Snickers with a bunch of 9-year-olds!” she says.