I went shopping with my bridesmaids over the weekend and we found a dress that looks phenomenal on all three girls and they all really liked it. The only problem is two of the girls fit perfectly into the sample size 8, the other would need a 10 (12 at the most) and she couldn't zip the dress up but she could get it on. Now she is refusing to order the dress unless she can find a sample in a larger size and doesn't trust the store's measurements. I've called over 25 stores in three states in a 200 mile radius that carry the line and not one carries anything other than the 8. She's even insisting that I call the shop and demand that they order her a larger sample before she will order it. I found one listed on ebay in a size 10 but it costs $65 which is half of the cost of the dress. I know she is feeling self conscious around the other girls since they are both thinner so I don't know what to say. She's been in lots of weddings and she knows this is how dress shops work.
I don't want any of my girls to be unhappy but this seems really ridiculous. I'm almost inclined to tell her she can pick out her own dress, but the other two want the strapless one that we picked out. I'm really bad at confrontational situations. Any advice on what to say/how to say it?