Regis Philbin's longtime morning co-host and dear friend Kelly Ripa is addressing the star's death. Taking to social media moments after the news broke on Saturday, July 25, the "Live with Kelly and Ryan" host paid tribute to the fallen star. As The Blast reported, Regis Philbin died at age 88. His family released a statement, revealing he passed on Friday, July 24 of "natural causes." However, TMZ is reporting he died of a heart attack on early this morning.