Mariah Carey [1]'s kids couldn't be any cuter if they tried! The singer took to Instagram on Monday to share a few candid photos of her 4-year-old twins, Monroe and Moroccan, having fun at the Bronx Zoo over Labor Day weekend. In one photo, Mariah and Monroe pose with what appears to be a set of ears. "Me and Miss Monroe. Happy Labor Day! #mariahcarey @bronxzoo," Mariah captioned the sweet snap. In another, she cuddles up to Moroccan in front of a turtle display, writing, "Rock rock the planet rock! Don't stop !!! #mariahcarey @bronxzoo #laborday #zoo." Mariah also shared a photo of herself feeding two lambs, with the hilarious caption, "C'mon it's LAMBTASTIC."

This isn't the first adventure the trio has gotten up to this Summer. After having a fun day out at Disneyland Paris [2] in early June, the twins stole the show during Mariah's Hollywood Walk of Fame ceremony [3] and also relaxed on a yacht [4] with their famous mom. Keep reading to see more of their day at the zoo, then check out 24 times Mariah proved she's the most glamorous mom [5].