Madonna [1]'s kids know how to party! The singer took to Instagram on May 25 to share videos and pictures from her family's sun-soaked Memorial Day weekend [2]. Madonna [3] posted a photo of her holiday "squad," which included her son Rocco and what appears to be a group of his friends. She then shared a sweet photo of her daughter Mercy sitting on the edge of a pool, with the caption, "Architectural beauty." Madonna ended the holiday weekend with two videos of her adventurous brood — one of Rocco doing an impressive backflip and one of Mercy running down a Slip 'N Slide. Keep reading to see more of Madonna's outdoor antics, then vote for the queen of pop as your favorite musician [4] in our annual POP 100 poll [5]!