Very wide thin curly braces with CSS or jQuery

Is there a way to get very wide but thin curly braces with CSS / jQuery?

Simply scaling the div also scales the line width, so the braces become ugly when getting too big.

<div id="braces" style="font-size:20px;">{</div>

$("#braces").css({
    "transform" : "scale(4,25)"
});

This code gives me very very large and narrow curly braces, but I would like to have very thin braces where only the "arms" became longer.

Has anyone an idea of how to achieve that?