Not free, but a pair of specs for a 'nerdy look'at Urban Threads: http://www.urbanthreads.com/produ...
They also have a monkey that's 'adorkable', a skully computer geek, and a 'talk Nerdy to me' design. Or you could try a google search for 'geek' or 'Nerd' with embroidery design and see what else you might come up with. Some of the sets of faces one sees around do have sunglasses and I'm sure there will be regular glasses around as well. Though often on 'seniors' :) You may be able to just add the right pair of glasses to another design.
here is one I found that looks like glasses has the brim over the nose just not going over the ears
I cannot help you but bring this question back TTT for other Cuties that can help you.