According to the bio page for Jean Harlow, she never wore any underwear. I couldn't help but ponder that pleasant little tidbit of info as I watched this movie, with more than a few nice rear shots of Jean in her figure-hugging dresses, with no visible panty lines whatsoever.
"It's going to get worse before it gets better." - The White House
I can see how men might be turned on by the lack of underwear but it doesn't really do much for me. I once had a boyfriend tell me he wasn't wearing undies. I knew what he meant but it kind of fell flat.
I think of underwear as a cleanliness thing; a protection, so to speak, for our clothing; which is usually more expensive. Also, things like bras are essential for women, like me, who are curvy. If one is flat-chested it may not be an issue but walking around bouncing all day is not fun. It also attracts the kind of attention most women don't want from most men. Wearing underwear, in my opinion, makes people look more pulled together.
That said, not wearing underwear kind of went with Jean Harlow's look and persona. Given the time, it may have also been a rebellious thing to do. Just a decade or so prior women were required to wear a lot of confining clothes. Going minimal was probably liberating. A lot of women may have wanted to let loose but could not. Harlow seemed to do what she wanted.
Today a lot of women, and some men, seem to have gone to the other extreme. They won't leave home without their shape wear; and these are people who work out all the time, are slim or rail thin, and have below average body fat. It's kind of crazy that some women are choosing to wear very binding corsets. What's next, full Victorian style clothing?
Woman, man! That's the way it should be Tarzan. [Tarzan and his mate]
Yeah, we've come back to where we were in the 1920s, women loudly saying they're free to wear comfortable clothing, and with hideously uncomfortable underwear under the clothing because it's fashionable to be built like a 13 year old girl.
But in the 1930s those bias cut satin dresses were all the rage, and I've heard that they came into fashion because of the new sound films. A lot of 1920s dresses featured tulle, taffeta, and heavy beading, all which rustled or rattled and made too much noise for the primitive sound equipment, so the costume department came up with these slinky and silent satin dresses. But yes, they showed underwear lines mercilessly, and had to be work without anything underneath, and probably wrinkled up like a bitch if you ever sat down in them. There's an anecdote about Claudette Colbert wearing one of those white satin things for a photo shoot, and turning beet red when she had to take off all her undies...