There's more difference between historical and contemporary books than the type of clothes the characters wear. My agent just sent back the edited copy of the contemporary I recently finished. With seven historicals to my credit and only three contemporaries, it's obvious I'm quite comfortable writing historicals. But even though there are no corsets or cage crinolines, there are thongs, demi-bras, sports bras and other garments worn by the contemporary heroine. And all kinds of oils and lotions to use when making love that weren't around two hundred years ago.
But the difference between the two genres goes deeper than clothing. Speech, for example.
There are contractions in a person's speech. In my historic world, American Indians don't use contractions, but they are used sparingly by others. My contemporary didn't use enough contractions. It does now. And I used several phrases in my contemporary which I thought were in common use, but my agent didn't know what I was talking about. Maybe I'm showing my age.
But, through my agent's diligence, every place a contraction was needed, it's there now. And every sports bra is ripped off the correct way. One final read-through is all that's needed before I send it back to her, and it gets sent out again. I hope it sells and that I can finish the trilogy. I like the family I'm writing about. And I had an idea yesterday for another contemporary story. About bourbon. Don't ask for details. It's still at the simmer stage.
How about you? Is it thongs or cage crinolines for you? I'm taking a poll.