creating elements using .each()?

I want to create a frosted glass effect for an image gallery - that will show a 'clone' of the bottom half of the image, with a blur filter and transparent white background applied to it.

this is an example of what i'm talking about: http://css-tricks.com/frosting-glass-css-filters/

my problem is - I want to write a piece of jQuery code that will dynamically take the original image, duplicate it, and then in my CSS it can apply the blur filter to the duplicated image - that way I don't have to have two versions of each image in my markup, and I'll be able to add new images later, achieving the same effect.

here is my HTML structure: (fairly simple)

<div id="gallery">
        <div class="g11x17 galleryWrapper">
            <img src="img/chancePoster.jpg">
        </div
        ><div class="g11x17 galleryWrapper">
            <img src="img/hopePoster2.jpg">
        </div
        ><div class="g11x17 galleryWrapper">
            <img src="img/tree.jpg">
        </div
        ><div class="g11x17 galleryWrapper">
            <img src="img/dan.jpg">
        </div
        ><div class="g11x17 galleryWrapper">
            <img src="img/tedBig.jpg">
        </div
        ><div class="g11x17 galleryWrapper">
            <img src="img/women.jpg">
        </div>
    </div> 

my CSS:

div.frostedGlass {
    position: absolute;
    height: 50%; 
    width: 100%; 
    background: rgba(255, 255, 255, 0.5);
    bottom: 0;
    overflow: hidden;
}
div.frostedGlass img {
    height: 200%; 
    width: 100%; 
    position: absolute;
    bottom: 0; 
    -webkit-filter: blur(20px); 
}

and here is the jQuery/JS i have written:

var $glass = $('<div class="frostedGlass"></div>');

$glass.appendTo($('.galleryWrapper')); 

$(".gallery img").each(function (){
    $(this).clone().appendTo($glass); 
});

I really though this would iterate through my gallery of images, clone each one, and append it to the newly created $glass div to achieve this effect. However it doesn't work! I fear i'm thinking completely wrong about the issue and need some help!!