Five years old...
and in her own words...
MeiMei: Mom am I five years old today?
Me: yes, honey happy birthday you are five years old
MeiMei: Will I be five years old tomorrow?
Me: yes, you will be five years old all year long.
MeiMei: (waving to the left)...well then...gooooooodbyyyyyyye four and (waving to the right) Heeeeelllllloooo FIVE!