This is going to be very vague as I was around 8 when I watched it. The movie is from the '70s or '80s.
An older, white-haired scientist (he was short in stature) created a robot or cyborg. She was a beautiful blonde female, and taller than him. As soon as she wakes up or whatever, he gives her a lab coat to cover up.
There is a part where she is changing behind a curtain, the old scientist pretends to be dusting and says, “doing nothing…looking at something” while taking a peek.