Miley Cyrus had a busy night last night -- and followed up her performance at the American Music Awards with her 18th birthday party!
Miley, who donned a goth look for her performance of "Forgiveness and Love" at the AMAs, changed into some belly-baring attire for her bash at Trousdale -- where she was joined by mom Tish, "LOL" co-star Demi Moore and Demi's daughter Rumer Willis.
Though she celebrated last night, Miley actually turns 18 tomorrow.
