Women transforming into other women, not necessarily for disguise.
Sabrina's aunts feel bad about not letting her go to a concert without supervision, so they turn themselves into teenagers so they can go with her.
Eva Grubb is given a makeover that makes her look exactly like Ginger.
The leader of a rival band masquerades as Jem to make her look bad to her public.
Hilda the Witch accidentally drinks her own beauty potion.
Tia uses a future gadget to see what she'll look like at 25.