Newly engaged couple Miley Cyrus, 19, and 22-year-old Liam Hemsworth have their work cut out for them. Most celeb couples who have gotten married this young don’t end up staying together, though there are a few exceptions. Check out these famous brides who tied the knot at 20 or under, and find out whose love lasted … and whose didn’t. -- by Lizbeth Scordo, omg!
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