Where can I get a cheap large--sized dress?

I recommend going on the http://www.buyer100.com website and choose the custom made service. they make dresses based on your own measurements . there are lot of styles for your choice and you can ask them through email or phone first if you have many details for sure. May you a happy shopping! Enjoy!

I found some cute dresses in a size large for you that aren't much money.  For example Amazon has a White Red Black Big Polka Dot Print Halter Top Dress With Beads.  This dress is very cute and the price is incredible.  Overstock has a Lucy Love Women's Green Boulevard Drop Dress.  This empire waist dress is beautiful and fun.  The best part is that it is inexpensive.  Other places to look are http://www.Buy.com http://www.SmartBargains.com and Nordstroms.  These too are great dresses without the heavy price.  I hope this helps you in your search.  Thank you for your question.

http://www.overstock.com/Clothing-Shoes/Lucy-Love-Womens-Green-Boulevard-Drop-Dress-LARGE/5076386/product.html?cid=123620&fp=F&mr:trackingCode=8BCE9F3D-52C1-DF11-98FF-0019B9C043EB&mr:referralID=NA

http://www.buy.com/prod/navy-blue-scoop-neck-sweater-dress-size-large/q/sellerid/24241626/loc/64935/217183111.html

http://shop.nordstrom.com/S/3101914?cm_cat=datafeed&cm_pla=dresses:women:dress&cm_ite=remain_ruffle_front_dress:303444&cm_ven=Froogle&mr:trackingCode=AB791653-BE70-DF11-9DA0-002219319097&mr:referralID=NA