Identify a famous photo based on my description of it

Hi, I used to see this photo every day in a classroom and I recently became curious about it. It’s a woman looking out a window, with one arm on the sill, resting her chin on the hand of her other arm. The most memorable aspect of the photo is that it’s black-and-white except for the woman’s red lips. She has short curled blonde hair, like Marilyn Monroe (maybe it is her?). Does anyone know what this is?

Is this the picture? If so, then yes it’s Marilyn.

Yes, it’s one of the most famous photos of her.