The film is to be set in the present day, offering up a modern take on the Hasbro series, which centered on Jerrica Benton, a music executive who uses a holographic computer system to secretly pose as a rock star named Jem.
In April, Aubrey Peeples was officially cast in the title role, with actor Ryan Guzman signing on as love interest Rio.
It's unclear what roles Ringwald and Lewis will be playing.
The following day, Chu sent some love to Ringwald, with a tease included to his followers:
"Jem and the Holograms" is expected to arrive in theaters in 2016.