Help! My MIL made LO an Elsa gown with a glittery fabric. Now my house and newborn are covered in residual glitter. LO loves the gown and has to wear it all the time. I don't think I has toss it/hide it because MIL made it.

Will washing the dress just infect my washer and amplify my problem? Any other tips/tricks? I've been using tape on my newborn.