The actress was seen spending time with the teenagers as they enjoyed their day in the theme park and even took pictures of them hanging out together.
A few photographs of Jennifer with the step-siblings were posted on Twitter by a fan account.
They were captioned, ‘Jennifer Garner fulfils mum duties for Jennifer Lopez’s child, Disneyland outing is proof!!!
‘Jennifer Garner took Jennifer Lopez’s child Emme and her own daughter Seraphina along with some of their friends on a fun trip to Disneyland.’
In the photos, Jennifer is wearing a blue sweatshirt with a smiley face and blue jeans. She also has a cross-body bag and a cap with her.
Seraphina sported a grey printed T-shirt with jeans and Emme has worn a white T-shirt with a wool sweater and denim shorts.
They were also spotted having fun on some rides in Disneyland, waving their hands in the air and screaming.
Jennifer Garner and Ben Affleck got divorced in October 2018.
The couple got married on June 29, 2005, in a private ceremony and have two other children, daughter Violet and son Samuel. Seraphina is their middle child.
Ben and Jennifer Lopez dated from 2002 to 2004, and called off their engagement when they parted.
They reunited after 20 years and got married in Las Vegas on July 16, 2022.
Jennifer Lopez shares her 15-year-old twins, Maximilian ‘Max’ David Muniz and Emme with her ex-husband, singer Marc Anthony.
During a different appearance on Today in January, the ‘Get Right’ artist revealed that all the kids are living under one roof.
‘We moved in together. The kids moved in together,’ the Hustlers actress said during a January 16 visit.
‘It’s been, like, a really kind of emotional transition, but at the same time all of your dreams coming true.’