I was so excited to get the package and now I don't know what to do...

I LOVE the dress to death - its gorgeous, and comfy... but the 6 is actually a touch firm across my chest - in this pic I could do up one more button but that is it... So I think I probably need the 8, but do you think the rest of it will be too big then?

I've NEVER needed a bigger top without altering the bottom so this is a bit of a novelty and completely new to me. (And never needed anything but the smallest size for my top!)

I'm sitting in it now and it is cutting in a touch in my armpits... so I guess my options are upsize to the 8, or send it back for a refund... Its on sale so limited stock - I'm about to phone to get them to hold the 8 for me while I seek your opinions!

On me:
http://i294.photobucket.com/al.....070015.jpg

In store:
http://www.maxshop.com/au/styl.....nim-dress/

THANKS!!!