Katharine Hope McPhee Foster (born March 25, 1984) is an American singer, songwriter, and actress. In May 2006, she was the runner-up on the fifth season of American Idol.

Her self-titled debut album was released on RCA Records on January 30, 2007, and debuted at number two on the Billboard 200, selling 381,000 copies (as of December 2010). The album's first single, "Over It", was a Pop Top 30 hit and was certified gold in 2008.

Her second album, Unbroken, was released on Verve Forecast Records on January 5, 2010, and debuted at No. 27 on the "Billboard 200". The album featured the single "Had It All", which peaked at number 22 on the AC chart. It has sold 45,000 copies as of January 2011.

Her third album, the holiday-themed Christmas Is the Time to Say I Love You, was released on October 12, 2010. The album debuted at number 11 on the Billboard Top Holiday Albums chart, while the single "Have Yourself a Merry Little Christmas" peaked at number 16 on the "Billboard" AC chart. As of January 2011, this album had sold 23,000 copies. McPhee released her fourth album, Hysteria, on September 18, 2015. She released her fifth album, I Fall in Love Too Easily, composed of jazz standards, on November 17, 2017.

McPhee has also established an acting career, co-starring in The House Bunny and Shark Night 3D. She played Karen Cartwright, one of the lead roles on Smash. From 2014 to 2018, she starred in CBS' Scorpion as Paige Dineen.

She Used to Be Mine (From "Waitress")

She Used to Be Mine (From "Waitress")

June 13, 2019

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Live on Soundstage

Live on Soundstage

November 16, 2018

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Living in the Moment (Music from the Motion Picture "Book Club")

Living in the Moment (Music from the Motion Picture "Book Club")

May 11, 2018

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I Fall in Love Too Easily

I Fall in Love Too Easily

November 17, 2017

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Everything Must Change

Everything Must Change

November 10, 2017

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Who Can I Turn To

Who Can I Turn To

October 20, 2017

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Sooner or Later (I Always Get My Man)

Sooner or Later (I Always Get My Man)

October 20, 2017

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Night and Day

Night and Day

October 6, 2017

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Hysteria

Hysteria

September 18, 2015

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Lick My Lips

Lick My Lips

May 26, 2015

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Terrified

Terrified

January 1, 2010

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Unbroken

Unbroken

January 1, 2010

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Christmas Is The Time To Say I Love You

Christmas Is The Time To Say I Love You

January 1, 2010

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I Know What Boys Like (From the Motion Picture "The House Bunny")

I Know What Boys Like (From the Motion Picture "The House Bunny")

January 1, 2008

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Real Love

Real Love

January 1, 2008

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O Come All Ye Faithful

O Come All Ye Faithful

December 10, 2007

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Dance Vault Mixes - Over It

Dance Vault Mixes - Over It

May 8, 2007

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Love Story

Love Story

March 30, 2007

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Over It

Over It

January 1, 2007

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Katharine McPhee

Katharine McPhee

January 1, 2007

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A Tribute To Katharine Mcphee

A Tribute To Katharine Mcphee

October 10, 2006

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Somewhere Over The Rainbow / My Destiny

Somewhere Over The Rainbow / My Destiny

June 27, 2006

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