The Black and White Disco Ball is presented by the Lupus Foundation Southeast Florida Chapter Annual Butterfly Ball featuring disco divas Maxine Nightingale, France Joli and Jackie Moore. Poolside coctails begin at 6:30 pm followed by a silent auction and gourmet four-course meal. The Mar-a-Lago Club, Palm Beach. $600. 279-8606 or 800-339-0586 or www.lupusfl.org.