Jennifer Lopezmarked a special milestone in her kids’ lives.On Sunday, the singer, who sharesEmme MaribelandMaximilian “Max” Davidwith ex-husband Marc Anthony, celebrated her twins’ 12th birthday witha sweet throwback photoof her children as newborns.“I know you’re 12 years old today but you will always be my babies… HAPPY BIRTHDAY TO MY BEAUTIFUL COCONUTS!!!” the mom of two, 50, shared on Instagram along with side thesweet portrait, which showed the mother looking down at her then newborn babies in their cradle.Lopez’s fiancé, Alex Rodriguez, alsocelebrated the twins’ birthdaywith a sweet post, which featured several photos of the blended family.“Happy Birthday Emme & Max!!!!! I’m so proud of both of you and so lucky to be a part of your life. I love you! ❤️,” the former MLB star wrote.Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest storiesRodriguez and Lopez merged their two families together, including Rodriguez’s daughtersElla Alexander, 11, andNatasha Alexander, 15, who already refer to Emme and Max astheir step-siblings.Earlier this year, Emme joined her mom onstage in a surprise cameo during Lopez and Shakira’s Super Bowl halftime performance in Miami. And during a recent appearance onThe Tonight Show,the proud mother revealed that her daughter wasn’t nervous to sing at the sold-out show.“She has the performance gene where she doesn’t let it in her mind, how big it is or how it scares you,” theHustlersstar raved about Emme. “That’s what you have to do when you’re up there, you kind of have to control [yourself].”The pre-teenstole the showwhen she hit the Miami Hard Rock Stadium stage to perform with her mother. She began her cameo with a rendition of “Let’s Get Loud” alongside some other young performers, before belting out a few lines from Bruce Springsteen’s “Born In the USA.”Jennifer Lopez and daughter Emme.Elsa/Getty“She has that gene, the gene that’s like I’m comfortable up here,” Lopez said to Jimmy Fallon. “I think she gets amped, like excited, but like a cute excited, like I wish I felt more like her.”Ella and Natasha also raved about Emme’s performance following the show, tellingEntertainment Tonightthat it was their favorite part.“My favorite part was when the little girls came out and Emme sang, it was really good,” Ellasaid in an interviewwithETafter the show.“It was the coolest thing to watch my stepsister sing. I’m so proud of her every time I see herand her voice is just angelic,” Natasha toldET. “My favorite part was whenever the beat dropped and the crowd just went crazy and the energy in the stadium was unreal.”
Jennifer Lopezmarked a special milestone in her kids’ lives.
On Sunday, the singer, who sharesEmme MaribelandMaximilian “Max” Davidwith ex-husband Marc Anthony, celebrated her twins’ 12th birthday witha sweet throwback photoof her children as newborns.
“I know you’re 12 years old today but you will always be my babies… HAPPY BIRTHDAY TO MY BEAUTIFUL COCONUTS!!!” the mom of two, 50, shared on Instagram along with side thesweet portrait, which showed the mother looking down at her then newborn babies in their cradle.
Lopez’s fiancé, Alex Rodriguez, alsocelebrated the twins’ birthdaywith a sweet post, which featured several photos of the blended family.
“Happy Birthday Emme & Max!!!!! I’m so proud of both of you and so lucky to be a part of your life. I love you! ❤️,” the former MLB star wrote.
Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories
Rodriguez and Lopez merged their two families together, including Rodriguez’s daughtersElla Alexander, 11, andNatasha Alexander, 15, who already refer to Emme and Max astheir step-siblings.
Earlier this year, Emme joined her mom onstage in a surprise cameo during Lopez and Shakira’s Super Bowl halftime performance in Miami. And during a recent appearance onThe Tonight Show,the proud mother revealed that her daughter wasn’t nervous to sing at the sold-out show.
“She has the performance gene where she doesn’t let it in her mind, how big it is or how it scares you,” theHustlersstar raved about Emme. “That’s what you have to do when you’re up there, you kind of have to control [yourself].”
The pre-teenstole the showwhen she hit the Miami Hard Rock Stadium stage to perform with her mother. She began her cameo with a rendition of “Let’s Get Loud” alongside some other young performers, before belting out a few lines from Bruce Springsteen’s “Born In the USA.”
Jennifer Lopez and daughter Emme.Elsa/Getty

“She has that gene, the gene that’s like I’m comfortable up here,” Lopez said to Jimmy Fallon. “I think she gets amped, like excited, but like a cute excited, like I wish I felt more like her.”
Ella and Natasha also raved about Emme’s performance following the show, tellingEntertainment Tonightthat it was their favorite part.
“My favorite part was when the little girls came out and Emme sang, it was really good,” Ellasaid in an interviewwithETafter the show.
“It was the coolest thing to watch my stepsister sing. I’m so proud of her every time I see herand her voice is just angelic,” Natasha toldET. “My favorite part was whenever the beat dropped and the crowd just went crazy and the energy in the stadium was unreal.”
source: people.com