The baseball star and his daughters spent time in the Dominican Republic with Jennifer Lopez and her kids earlier this month.
Alex Rodriguez celebrating his "birthday girl."
The baseball star took to Instagram on Saturday to share sweet pics from daughter Ella's 9th birthday party.
WATCH: Alex Rodriguez Wishes 'Lil Wild Child' Daughter Ella a Happy Birthday -- See the Sweet Post!
Rodriguez, who is currently dating Jennifer Lopez, reunited with ex-wife Cynthia Scurtis for the occasion, as Ella blew out her candles at a fun pool party.
"#BirthdayGirl," the father of two wrote alognside a photo of Ella with her birthday cake.
WATCH: Jennifer Lopez Shares Lookalike Pic of Daughter Emme and Alex Rodriguez's Daughter Natasha
"Happy Birthday Ella! #Piñata #HBD #Miami #305," he captioned a video of Ella and her friends going after a piñata.
Ella actually turned 9 last week, shortly after her Easter vacation with Lopez's children, Max and Emme, in her dad's homeland of the Dominican Republic.
See more on the family's fun-filled getaway in the video below.