Help! Where can I find tops/shirts?

Does anyone have any suggestions as to where might be a good place to shop for flowy, tunic-y, a-line type shirts or tops? I am a little overweight to begin with, and I carry it mostly in my mid section. Now, being pregnant (only 6w4d) and bloated has only added to the thickness in that area, and I would really love to find some tops like I described above. I see people wearing cute ones all the time, but I can never seem to find any when I go shopping! And I'm hating every single item of clothing in my closet currently.😖