Any idea where can I get reasonably priced pretty flower girl dresses for 7 year olds?
Monsoon in the Sale
If you have a sns account or friends in the UK you can purchase online
http://us.monsoon.co.uk/us/wedding-boutique/flower-girl
the most 'reasonable' solution would be to buy the material and get it stitched... else if you're keen for a quick fix then try stores like M&S, Debenhams, etc as they often stock long gown style dresses but usually closer to the festive period (eid or christmas)...
are you open to online shopping?? David's bridal often has a large section of dresses on sale and can be sorted by colour, etc.