Adult Humor fiction: Woman gets a job on a movie lot in the costume department and sleeps there > Likes and Comments

I'm looking for a book I recently read, maybe it was a Kindle Unlimited so it might not have been a major publisher. It was about a middle-aged woman gets a job on a movie lot in the costume department and sleeps there because of a mixup with an apartment. She's not really qualified, but turns out to be good at the job, and there was some sort of intrigue, but mostly it was just lightly humorous.