There are a lot of nerdy looking girls with glasses at reddit.com/r/GirlswithGlasses/. On this subreddit, you will be able to find quite a lot of pictures of all kinds of girls who enjoy taking pictures of themselves completely naked or while they are looking sexy in their outfits. The content you find here is most likely going to come from real amateur girls that are registered users on the website, of course, there are some exceptions where you might see a picture of your favorite pornstar here and there too.
You can register for free as well, and with that, you will get access to comment on all of the posts as well as upvote them in order to help them get to the hot page. The hot page is the first page of this subreddit which will feature only the posts with most upvotes through the day.