Sarah Hyland may be young and beautiful with a budding career ahead of her, but the Modern Family star has quietly been battling a serious illness, which she opens up about in the new issue of Seventeen magazine.  The 21-year-old has been struggling with a lifelong battle with kidney dysplasia and revealed that she underwent a kidney transplant on April 13, thanks to an organ donation from her father.  OK! GALLERY: OK!'S NYC FASHION WEEK BLOG: CHRISTIAN SIRIANO'S SHOW!  "I have a second chance at life," Sarah says, "not a lot of people get ... Read More >>