PHOTOS: Inside Jennifer Lopez's Sexy, Star-Studded Birthday Party
The party continued in Lopez's Caesars Palace Villa, where the birthday girl (in Balmain) snapped selfies with Harris and was overheard talking about collaborating with the deejay. By the end of the night, Lopez was on the piano singing "End of the Road" and "My Girl."
On Sunday – her actual birthday! – longtime manager Benny Medina threw the songstress a bash (co-hosted by Smart) at the Nobu Villa atop the Nobu Hotel at Caesars Palace, which rents for $35,000 a night. Pals like Leah Remini turned out to celebrate.
Lopez slayed in a sexy green Zuhair Murad jumpsuit.
"HAPPY BIRTHDAY to the light of my life. My supporter, rock, partner in crime and love," Smart wrote in an Instagram post. "To the most beautiful bear in the world! I love you and wish you the Happiest birthday ever."
Lopez's parents Guadalupe Rodriguez and David Lopez were on hand, and in an emotional speech, the star thanked them for raising her the way they did.
Singer Maxwell serenaded Lopez with "Happy Birthday" as staff carried out the multi-tiered cake.
Soccer star Cristiano Ronaldo came out to celebrate, too.
There was tons of dancing, and the crowd went wild when Lopez's "Ain't Your Mama" and "Booty" came on.