Katharine McPhee: The Evolution of an 'Idol'

Katharine McPhee at 'American Idol' auditions in 2005.

Katharine McPhee at 'American Idol' event for the Top 12 in 2006.

Katharine McPhee poses for an 'American Idol' Top 12 photoshoot in 2006.

Katharine McPhee performs on 'American Idol' on April 25, 2006.

Katharine McPhee attends the 17th Carousel of Hope Ball in 2006.

Katharine McPhee attends the American Music Awards in 2006.

Katharine McPhee attends the Billboard Music Awards in 2006.

Katharine McPhee attends the Maroon 5 album release party in 2007.

Katharine McPhee at Vegas Magazine's 4th anniversary party in 2007.

Katharine McPhee attends the premiere of 'The House Bunny' in 2008.

Katharine McPhee attends the 30th anniversary Carousel of Hope Ball in 2008.

Katharine McPhee attends a Matthew Williamson store opening in February 2009.

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Katharine McPhee: The Evolution of an 'Idol'

Katharine McPhee at 'American Idol' auditions in 2005.

Katharine McPhee at 'American Idol' event for the Top 12 in 2006.

Katharine McPhee poses for an 'American Idol' Top 12 photoshoot in 2006.

Katharine McPhee performs on 'American Idol' on April 25, 2006.

Katharine McPhee attends the 17th Carousel of Hope Ball in 2006.

Katharine McPhee attends the American Music Awards in 2006.

Katharine McPhee attends the Billboard Music Awards in 2006.

Katharine McPhee attends the Maroon 5 album release party in 2007.

Katharine McPhee at Vegas Magazine's 4th anniversary party in 2007.

Katharine McPhee attends the premiere of 'The House Bunny' in 2008.

Katharine McPhee attends the 30th anniversary Carousel of Hope Ball in 2008.

Katharine McPhee attends a Matthew Williamson store opening in February 2009.

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