As far as we can tell, there are three explanations as to why Scarlett Johansson is wearing this retro get-up.
1. She's stopping by the Late Show with David Letterman en route to a 1940's costume party.
2. She didn't have time to change out of her wardrobe from the WWII film she's secretly shooting.
3. She's well aware that her face and body have a distinctly vintage feel, and she's using that to her advantage.
We suspect the Don Jon star is smart enough for the answer to be option #3.
She rocks the classic curled bangs perfectly, especially in that bombshell shade of blond. Her trench coat is something Vivien Leigh and Ava Gardner would covet, especially in that khaki shade. The blue cocktail dress has that bold feel of an on-screen siren, just like her appropriately scarlet red lips. And it's all capped off with the perfect pair of Hollywood shades.
We used to think Johansson's looks made her a visitor from another planet, but now we're wondering if she's actually from another decade.