What color should I use for the text on this black and white image?

I'm trying to add text to this picture, and I've tried several colors for the text in different levels of opacity, but nothing is looking right. I'm making it to be an iPhone wallpaper, and I don't want the text to be on her face. Any ideas?

Added (1). Looking for the right color for text on this photo. Please note that I won't hace the blank black space since it'll be made to fit my iPhone. What color should I use for the text on this black and white image

Red

What about a golden orange, of high saturation and medium brightness? The perfect additional touch: a narrow black border around each letter, and a narrow white border around that for each letter.

Are you allowed to use this image without paying somewhere for it?