Class in session: Beyoncé and daughters Blue Ivy, 9, and Rumi, 4, take centerstage for her athleisure brand Ivy Park’s newest collection, Halls of Ivy. In new photos shared on Thursday, Dec. 9 to coincide with the collection’s release, the singer, 40, and her daughters model a two-piece crop and legging set in a black and white houndstooth pattern, as seen in photos here.