Who will play Dee Dee Allen in The Prom? Meryl Streep.
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Netflix's 'The Prom' musical: Who is the cast and who are they playing?
2. Who will play Dee Dee Allen in The Prom? Meryl Streep.
Meryl Streep plays Dee Dee Allen, a two-time Tony winner and Barry Glickman's partner in a career-ending musical. As we all know, Meryl's kind of a big deal. She's had an acting career spanning decades and has starred in 'The Devil Wears Prada' and 'Mamma Mia'.