Indeed, you can wear a bra over a corset, depending on the type of corset you want and the comfort you desire. Traditionally, people use bras over underbust corsets, but with overbust corsets, people rarely wear bras unless it's for added support or protection over the nipples.
Underbust corsets do not even cover up your breasts and, hence, do not provide much lift or even support which a bra might offer to you. If you're looking for added comfort, support, or shape, the common practice will be the wearing of a bra under this underbust corset.
No, you usually don't need to wear a bra with an overbust corset. Overbust corsets are built to support, lift, and shape your breasts much like a bra does. Many women feel that the structured fabric and boning of an overbust corset offer enough support and comfort to be used alone.
Half corset can transform your mood and confidence.
Final thoughts:
Whether you wear a bra with a corset or not depends on your needs and preferences. Overbust corsets usually do away with the need for a bra, while underbust corsets may need a bra for extra support. Try both options to find out what works best for you comfort and desired look. It is all about what works for you and makes you feel confident and comfortable.