Watch Alex Rodriguez Slay Jennifer Lopez's Choreography With Daughter Natasha!

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Talk about being a supportive boyfriend!

Jennifer Lopez shared an adorable video on Sunday of Alex Rodriguez and his 12-year-old daughter, Natasha, trying their hand at her fierce choreography while watching her Las Vegas show, All I Have. Rodriguez can't help but crack a smile, doing his best J.Lo moves.

"This made my night ❤️❤️❤️Tashi and Daddy coming thru with the #ography #waitingfortonight #Allihave #Vegas," Lopez Instagrammed.

Jennifer Lopez Says Alex Rodriguez Romance Is the First 'Good Relationship' She's Ever Been In

Meanwhile, 42-year-old Rodriguez couldn't be prouder of his superstar girlfriend. On Monday, he shared a video of Lopez singing Journey's "Faithfully" after her show.

"Beautiful," Rodriguez gushed on Instagram.

Jennifer Lopez Adorably Gives Alex Rodriguez's Daughter Ella Singing Lessons -- Watch!

ET spoke with the legendary athlete last week at New York Fashion Week, where he talked about daughters Natasha and 9-year-old Ella's special relationship with 48-year-old Lopez

"My girls adore Jennifer," Rodriguez told ET. "She's a great role model and they want to do exactly what Jennifer does. They want to sing, they want to dance, they want to produce, they want to direct. A lot of people don't know she's also a great athlete and great business person, and for me, I'm the luckiest father in the world to be able to expose my beautiful daughters to someone as brilliant as Jennifer."

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