I can‘t understand a line of a TV show.
I'm watching a old sitcom called "The Golden Girls". There is line that I can't understand. The context is that Dorothy liked a doctor and wanted to date with him. When Blanche saw this doctor she flirted with him. Dorothy drew her aside and said:“Listen, you keep your bloomers on, Scarlett.”
What does this “keep your bloomers on” mean? And "Scarlett" means who?