Conversation so far:
Where was Christina Aguilera born?
New York City, New York.
How long did she live in NYC?
Her family moved frequently because of her father's military service.
When did she begin singing?
Growing up, Aguilera, known locally as "the little girl with the big voice", aspired to be a singer, singing in local talent shows and competitions.
When did she become famous?
the theme song "Reflection" for their animated film Mulan (1998).
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How did she get on the Mickey Mouse Club?
Aguilera auditioned for a position on The Mickey Mouse Club.

Question: How long was she on the show?
Self-contained rewrite: How long was Christina Aguilera on the Mickey Mouse Club?