Diana?
Deanna.
Bev wore standard duty uniform throughout the series, but she often added a doctor's lab coat over it. 'Cause she's the doctor.
She also wore it for a time to disguise her real life pregnancy.
See, I did not know that. I'll have to pay attention. What season was that?
Her pregnancy was throughout season 4. I know that she was heavily pregnant in the episode The Host, I remember Gates saying that they hid her growing midsection by making the lab coat bigger. There is a screencap from the episode QPid where you can see that Gates is heavily pregnant. If I time to find it I can post it if you like...