Here’s Kat performing “Whine Up” from her debut album, 9 Lives:

And the ButtaWiki says…

Kat DeLuna (Born Kathleen Emperatriz de Luna in the Bronx, New York) is a bilingual American musician, of Dominican descent, who is signed to Epic Records. DeLuna was 19 in 2007.

Her debut album, 9 Lives, produced by hitmaker RedOne, was released on August 7, 2007, as confirmed by Billboard.[4] “Whine Up” was used as the theme song for WWE’s SummerSlam 2007 pay-per-view, and the WWE SmackDown vs. Raw 2008 soundtrack. “Whine up”, also, is the name of the bonus spanish version of the song. Videos were shot for both versions. “Am I Dreaming” has been confirmed to be her second single. She is also featured in Omarion’s new song “Cut Off Time” from his upcoming movie Feel The Noise. [Wiki]

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Kat’s Official Website