Final answer:
Undergarments are a concern of the costume designer.
Step-by-step explanation:
The statement that undergarments are not a concern of the costume designer is false.
Undergarments are an important consideration for costume designers because they can affect the overall look and fit of the costume. For example, the type and color of undergarments can impact the way a costume appears on stage. Additionally, undergarments may need to be designed or altered to work seamlessly with the costume and allow for quick changes.
One example of this is the use of corsets in period dramas. The costume designer must account for the corset and its effect on the actor's body shape, as well as the comfort and movement of the actor.