Cady Heron, a homeschooled girl, lived in Africa for 15 years. Entering public school for the first time, she meets the "worst" of her classmates, the Plastics. Want to watch live Girls online?! No, not THOSE kind of online Girls HBO's Girls! America's preeminent show about millennial females making their way. Watch Girls Online: Watch full length episodes, video clips, highlights and more. All Free (55); All Paid (62); Amazon Prime (19); Amazon (53); Itunes (20).