The Andrews Sisters are Maxene , LaVerne and Patty Andrews . In the 2nd Season of Here 's Lucy , Patty guest stars in the episode `` Lucy And The Andrews Sisters '' where she , Lucille Ball ( as LaVerne ) , Lucie Arnaz ( as Maxene ) , and Desi Arnaz Jr. ( as Bing Crosby ) re-create the Andrews Sisters sound for a dinner being held in Patty 's honor by the Andrews Sisters Fan Club .