I changed to maternity bras or no wire bras as soon as i found out i ws preggies. As they were so sore couldn't wear wire. now can't wait to get back to wire but it gonna be a while fed DS1 to 15 months and want to do the same for ds2 so will be wire free for a long time yet!!
Sorry no help on where to get bras for bigger boobies i'm a d or dd find the warehouse ones perfect and a size 18 -20.