Kim Kardashian knows how to get your attention, especially when there’s a good cause that needs help! The sexy reality star posed in a coffin for this ad supporting World AIDS Day December 1, and will go off Twitter and Facebook until $1 million is raised for the charity Keep a Child Alive. The ad reads: “Kim sacrificed her digital life to give real life to millions of others affected by HIV/AIDS in Africa and India. Visit BuyLife.org or text ‘KIM’ to ’90999′ to buy her life now.” Other celebs going offline Wednesday include Alicia Keys, Lady Gaga, Justin Timberlake and Usher.