Not doing it for me in either pic.
We've got to remember that Ilia was supposed to be an alien, and while yes, you can have aliens that are just regular humanoid in appearance, the lack of hair was determined to be the physical characteristic of Deltans. So how attractive she is with or without hair should not be used as a critique against Gene's ideas anymore than debating whether or not Spock should have had pointy ears or eyebrows. And yes, there was resistance to Spock's appearance back in the day too--because studio heads thought he looked too much like the devil.
That being said, there's really no other female celebrity who looked that good bald. She's the one everyone goes to in order to prove that bald women can be sexy, which is a success as far as I'm concerned.
Also, whatever TMP lacked in other areas, it got people's attention, if nothing else, by virtue of Ilia's appearance. So it served a very important purpose of starting up some water-cooler talk about bald women. Here we are all these years later still debating it.