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AJ, part of the singing duo Aly & AJ, is the younger of the sisters by two years. She's cute, amazing, and a great singer. Her voice is slightly lower and huskier than her sister's voice, which makes it all the more unique.

Contrary to popular belief, AJ didn't use her sister to start her acting career. AJ started her acting career in 2002 while her sister began in 2005.
AJ Michalka is the complete epitome of awesome! Her sister is pretty cool too.
by AJROCKS January 10, 2007
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