Sierra McCormick's birthday is October 28
October 28 1998
Sierra Nicole McCormick
I believe shes is Christian
im preety suree its lisaa
Kenny McCormicks Birthday is on 11th March....Xx
No, I don't think so.... All I know is that Sierra has a little sister named Kayla.
Rubén Sierra was born on October 6, 1965.
Gregory Sierra was born on January 25, 1941.
Jessica Sierra was born on November 11, 1985.
Agustin Sierra was born on September 23, 1990.
Kevin
december 2nd