Put your hands up, they're playing her song - a billion times and counting. Miley Cyrus‘ smash "Party in the U.S.A." has ...

The 32-year-old Grammy-winning singer and 26-year-old musician cozied up for the star-studded event, during which they were joined by Miley's mom Tish Cyrus, 57. The Party in the USA hitmaker ...

For the after-party, Cyrus wore a custom black strapless Maison Margiela gown paired with a matching black handbag. She accessorized the look with silver hoop earrings and a silver ring.