The boogie-down-Bronx starlet performed the single, a hit so far in 18 countries, looking larger than life in a sexy gold ensemble.
Upon finishing her number on stage, she quickly changed her attire while the host Ryan Seacrest, gave America a behind-the-scenes look at López's new video, "I'm Into You" starring Cuban Telenovela papasito William Levy.
In the teaser shown Thursday night, Levy showed off his toned back, arms and chest, while López danced to the beat in a Tina-Turner-like outfit in Yucatán, Mexico.
Puerto Rican Country music contender Scotty McCreery was tested soon after, when Seacrest asked him to stand next to the two singers he thought would be in the bottom two.
McCreery refused to do such a thing, and was told to stand next to James Durbin and Haley Reinhart.
The trio was safe, leaving Lauren Alaina and Jacob Lusk as the two contestants in danger of going home.
"After 60 million votes, the person going home is Jacob," announced Seacrest. And just like that, there were four.
You can reach Alexandra Gratereaux at: Alexandra.Gratereaux@foxnewslatino.com