American Idol:

The final showdown was between Justin Guarini, one of the early favorites, and Kelly Clarkson. Clarkson was not initially thought of as a contender, but impressed the judges with some good performances in the final rounds, such as her performance of Aretha Franklin's "Natural Woman", and Betty Hutton's "Stuff Like That There", and eventually won the crown on September 4, 2002.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". What month did Kelly Clarkson win?
September