She may be mom to twins, but Jennifer Lopez isn't letting that stop her from making the most of her newly single status.

The sexy star has been partying up a storm since she split from Marc Anthony just a couple of months ago and this weekend was no exception.

With a glass of Champagne in her hand, the 42-year-old took let lose at PURE Nightclub after raunchy performance at the iHeartRadio Music Festival.

PHOTOS: Jennifer Lopez Gets Sexy And Wild In Las Vegas

After arriving at 2 am Sunday, the famous diva certainly looked to be enjoying her night off from mommy duty as she chatted with as many people as she could.

Earlier in the evening she took Sin City by storm in a revealing red outfit that only partly covered her tush.

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And she proved she was back to her booty-shaking best as she performed to the enthusiastic crowd.

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Lady Gaga brought down the house Saturday night with one of her most emotional performances ever. As one of the superstars appearing at the iHeartRadio Music Festival in Las Vegas, Gaga dedicated her song Hair to Jamey Rodemeyer.

The 14-year-old Rodemeyer, of Buffalo, NY, committed suicide last Saturday after a year of online bullying which he'd spoken about in several YouTube videos.

PHOTOS: Lady Gaga Performs Moving Tribute To Jamey Rodemeyer

The teen was also a huge Lady Gaga fan, and in one of his postings earlier this year said, "Lady Gaga, she makes me so happy, and she lets me know that I was born this way."

He was found dead outside his house. Police confirmed that his death was self-inflicted but would not reveal how the teen took his life.

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Last night Gaga told her audience she was dedicating her performance to Jamey, and that "bullying is for losers."

The Amherst  Police Department's Special Victims Unit is now investigating whether charges can be brought against three unnamed teens who were known to have been bullying Rodemeyer.  At issue is the lack of bullying laws in New York.

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"The special victims unit is looking into the circumstances prior to his death," Captain Michael Camilleri said. "We are not sure if there is anything criminal or not."

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