Jennifer Lopez the zoo kids twins

How cute are these two?

On Tuesday Jennifer Lopez's adorable twins Emme and Max went to the zoo with their nanny, and afterwards we spotted them horsing around in the parking lot. We're guessing mama J. Lo was busy preparing for her performance on Dancing With The Stars last night (she sang "Quizas, Quizas, Quizas" with Andrea Bocelli), which would explain why we caught Casper walking her dog yesterday.

So what about J. Lo's rumored concerns that ex-hubby Marc Anthony introduced his new lady love Chloe Green to their twins too quickly? "Jennifer invited Chloe and Marc over to discuss the kids, and the two women bonded," a source told Grazia. "She and Marc are still close, she wants him to be happy." That worked out well!