A little interesting micro (or something even smaller) trend that I have picked up while browsing clothing websites is Team USA or what I think of as traditional American High School or Secondary School clothing...
From Top Shop
http://www.topshop.com/webapp/.....geSize=200
http://www.topshop.com/webapp/.....geSize=200
and from ASOS
http://www.asos.com/Asos/Asos-.....vy%2fCream
http://www.asos.com/Asos/Asos-.....8;clr=Navy
PS - maternity clothes are super boring - so I am perusing regular clothes.