lopsided

Hi, I just had a lumpectomy on Friday and I am feeling very lopsided.  I was a 44c before surgery and my affected breast looks to be a sadly mis-shapen 36b now.  My surgeon spoke to my husband post-op and said she had to take a lot more than she had hoped, but that it should look alright with the right clothes.  I wear very lightweight clothing because of the heat here in south Texas and usually sleeveless.  I only own about two tops that are loose button down types and seldom wear them because they are too warm for me.  So what options are there that are comfortable and inexpensive for women like me that have one large breast.  It sounds like a lot of the women posting were rather small to start with or something and a loose top was all it took to disguise the difference.  Don't think that will work for me.