It's been four years since Mariah Carey released her last album, Memoirs of an Imperfect Angel. Since then, M.C. has been experiencing a life transition. She gave birth to twins in 2011, became a spokesperson for Jenny Craig and also used her musical expertise as a judge on Season 12 of American Idol. All the while, the 43-year-old singer-songwriter hasn't lost a step. With the release of her new single "#Beautiful," featuring Miguel, we can't help but get excited about MiMi's return.