The birthday party, dubbed Dem Babies Sixth Birthday Bash, appeared to be a blast. Monroe was adorably dressed in a powder blue dress printed with red roses for the soiree, while her brother was cool and casual in a peach-colored top and white shorts.
The always-stylish Mariah wore a bright orange zip-up jacket and matching belt with distressed denim jeans and a pair of black heels, later changing into black Adidas sliders. Nick also opted for eye-popping colors, styling his bright pink-and-purple flannel with jeans, Timberland boots and his signature turban.
At one point, Goofy, Minnie Mouse and a few of the chipmunks even posed for a group pic with the famous family!