Family and friends of Muhammad Ali — including celebs such as Will Smith, 47, and Bill Clinton, 69 — gathered to pay their respects to the late boxing icon on June 10. The 74-year-old, who passed away on June 3 from septic shock due to unspecified natural causes, will undoubtedly be missed, which was evident from the estimated 100,000 people who showed up to his funeral and even lined the streets.