Hi .. if you go to category page (EX) https://www.belleforme.com/panties
we are using shop by categories, color on sidebar.
I want to add shop by size..
would you please tell me which file should I revise and what should I add code?

I think i found sidebar
app\design\frontend\default\Kalolia\default\template\catalog\product\view.phtml
but I couldn’t figure out what is next step …