A Betty Boop costume typically includes a short black dress with a fringed hem, a headband with floppy ears, and black high heels. Some versions of the costume also include a red bow tie and a tail. To complete the look, you can add temporary tattoos or makeup to give yourself a more cartoonish appearance, such as exaggerated eyebrows and long eyelashes. You can also carry a small prop, such as a microphone or a bag with the word "Boop" on it, to help bring the character to life.