@HollyW True. And we don't know how much the image has been photoshopped. What skin ever looks as flawless as that?
The image combined your caption seems to aim at showing that girls who read can also be sexually attractive. But it also implies very young girls. It would have been easy to show a freshman searching an online catalogue in one of the uni's librairies, or debating in a tutorial - dressed in normal street clothes.
Asking whether smart girls are sexy is like asking "do brains turn you off?" Men may say they find a smart woman "more interesting", but unless they are intelligent men themselves they actually steer clear of them.