Co-star recalls 'badly behaved' Dick Van Dyke on 'Mary Poppins' set ahead of icon's 100th birthday

Dick Van Dyke may be turning 100 on Dec. 13, but his “Mary Poppins” co-star says the legendary actor has always been a mischievous kid at heart. “It was so much fun. Especially because of Dick,” Karen Dotrice, 70, told The Post of working on the 1964 Disney classic. “The minute the camera wasn’t on him, he was just a badly behaved little boy.” Dotrice, who played young Jane Banks alongside Van Dyke’s joyful chimney sweep Bert and Julie Andrews’...