THOROUGHLY MODERN MILLIE-June 17-26.   (2016 Summer Musicals) UTD Theatre-800 W Campbell, Richardson  Show times: FR/SAT 7:30, SUN 2:00. Tickets: $25 adults,  $15 youth. Box Office: 972-690-5029. On line tickets: www.rcttheatre.com Thoroughly Modern Millie is an effervescent musical romp that will have you dancing the Charleston. Based on the 1967 film of the same name, Thoroughly Modern Millie opened on Broadway in April 2002. Featuring hit songs such as “Gimme Gimme” and “Not for the Life of Me,” the production subsequently won six Tony Awards and five Drama Desk Awards, including the win for Best Musical at both award ceremonies. Performed by RCT’s acclaimed REP Company actors.