Hollywood actor Charlie Sheen announced his 28-year-old daughter Cassandra Estevez has given birth to his first grandchild, a girl named Luna. \"It\'s impossibly a most wondrous day. My bucket list is a thimble!\" the 47-year-old actor told TMZ Wednesday. The celebrity news website said Sheen\'s thimble metaphor meant becoming a grandfather was one of the biggest items on the \"Anger Management\" star\'s bucket list or roster of things he wants to accomplish before he dies. Sheen also has two daughters with his ex-wife Denise Richards and twin 4-year-old sons with ex-spouse Brooke Mueller.