Alvin is on April 14th and Theo is June 24. Not sure about simon... sorry :(
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The Chipmunks are triplets and they were born on 14th of April and they are all eight years of age but Alvin is 5 minutes older than Simon and Simon is a few minutes older than Theodore .
Dave Seville.
Alvin Harper's birth name is Alvin Craig Harper.
No. Pam is married to Alvin Whitney, not Alvin Harper.
There are more than four : Alvin and the Chipmunks Meet Frankenstein , Alvin and the Chipmunks Meet the Wolfman , The Chipmunk Adventure , A Chipmunk Christmas , Little Alvin and the Mini-Munks , Alvin and the Chipmunks and Alvin and the Chipmunks: The Squeakquel .