The trio soaked up the LA sunshine on some of the theme park's gentler rides.
The 44-year-old popstar was casual in a crisp white t-shirt, blue tracksuit bottoms and a pair of on-trend white wedge trainers. She kept her accessories simple and wore a pair of oversized sunglasses.
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Her son Max, who had his arm in a cast, wore shorts and a t-shirt while Emme looked adorable in a bright blue summer dress.
Amid beaming smiles and laughter, the trio rode the famous Dumbo ride and other child-friendly rollercoasters. Jennifer put her arm protectively around her two children as they whizzed around the tracks.
The Jenny From The Block singer had performed the night before alongside Taylor Swift at the Staples Center in LA to the surprise and delight of the enthusiastic crowds.
The pop pair put on a dazzling performance for the fourth night of starlet Taylor's sell out run. If J Lo's Twitter photos were anything to go by, it seems that they had just as much fun on-stage as they did backstage.