"Good Girl" is a song by American recording artist Alexis Jordan, taken from her self-titled debut album. It was released as the album's second single on February 18, 2011. The dance-pop song was written by Autumn Rowe, Stargate, Petr Brdičko, Sandy Vee and Espionage, and it was produced by Stargate and Sandy Vee. Jordan has said the song is a "girl’s anthem" about how "you can better yourself, even if your past isn’t as good as your present." "Good Girl" debuted at number six in the United Kingdom, and charted at number fifteen in Ireland. In the United States, the song peaked at the top of the Hot Dance Club Songs chart.

Nick Levine of Digital Spy awarded the song four out of five stars, and wrote "Call us naive, but with beats this struttable, verses so irresistibly bop-friendly and that, ahem, killer chorus, who wouldn't want to take a chance on her?"Daily Star's Sarah-Louise James gave the song a positive review writing, "This has the same infectious kind of beat [as "Happiness"], which makes you want to bend your knees up and down in quick succession then bounce from side to side with a stupid expression on your face."

On February 24, 2011 "Good Girl" debuted at number eighteen in Ireland, and has since peaked at number fifteen. In the United Kingdom, the song debuted at number six for the week ending date March 5, 2011, becoming Jordan's second top-ten single in the UK. In the United States, the song debuted at number fourteen on Billboard's Hot Dance Club Songs chart on the issue dated March 19, 2011. It reached the top of the chart on the issue dated April 30, 2011, becoming Jordan's second consecutive number-one hit in the US.

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