Mariah Carey'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 a**ther, 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."