Demi Lovato and Miley Cyrus have reportedly been close for years -- so can Demi dish on some information about Miley and Liam Hemsworth's nuptials? Not so much. Demi was asked if she plans to attend Miley and Liam's wedding and Demi pretended that she didn't know anything about anything.She said, "I don't know when it is. I don't even know if she's planning it yet. I don't know."