The singer and top performer kicked off her Las Vegas residency at Planet Hollywood Resort and Casino on Wednesday, Jan. 20. Though the show was unstoppable, the stunning 46-year-old couldn’t believe how she nailed the show.

"It was so much fun," Lopez said about her spectacular show, admitting that the experience was a bit overwhelming. "First I'm back here, and I'm on my staircase with my big Versace feather thing, and then I walk here and it was like, 'Woo! This is your life.'"

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Meanwhile, ET dished out night reviews and revealed that JLo gave her spectacle performance. Despite of it, there was a quiet moment when the mother-of-two was in tears and sweetly dedicated Lee Ann Womack's "I Hope You Dance" to her two children with ex-husband Marc Anthony, 7-year-old twins Emme and Max.

"You know what, in rehearsal every time I sing the damn song I get choked up," Lopez admitted to ET. "Like, the dancers, they know me, the band they're like, 'She's going to cry again.' I can't help it. It makes me emotional to think about them."

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Moreover, after all the hard work and dedication that the "Waiting for Tonight" singer did for the Las Vegas performance, JLo’s close friends were having an after-party event at the Caesar’s Place, Mr. Chow Restaurant. The star-studded event were attended with the likes of Justin Bieber, Derek Hough, Alicia Vikander, Nicole Scherzinger, Ne-Yo, Rosie Huntington-Whiteley, Casey Affleck, Gina Rodriguez, Wilmer Valderrama, her co-stars Ryan Guzman and Ray Liotta, and her BFF, Leah Remini, were all in attendance, where they were served lobster and Dom Perignon 2006 champagne, a source inside the party tells ET.

As for Lopez herself, she mostly stayed in the private room with Remini and her boyfriend, choreographer Casper Smart, who a source says was "attentive" to his superstar girlfriend, ET wrote.

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