So, I chose my bridal party, and we are about 13 months out from my wedding. I was open to having them wear all mismatched gowns as long as they were black and floor length, or having them all match. One member of my bridal party B found a dress that was incredibly pretty and I really like it. I thought that all the members of the bridal party would look great in it, and they all agreed that the price was great, and that they liked the dress. A week later another member of the BP, (lets call her C) informed me that the price of the dress was dropping, which led her to believe that the dress was either being discontinued or was selling out. My bridal party agreed to purchase the dress two sizes up early (which made me feel a little silly) and I agreed to pay for the alterations when it came time for the wedding. A few days ago, I got a message from B saying "hey the dress doesn't fit me, and it doesn't look like it could be tailored to the extent I'd need it to be (taken out a lot). Its a really nice dress, but I think we should all just order new dresses" (she ordered the largest size they carry). Turns out C was correct, the dresses are being discontinued and they aren't taking returns (according to 
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The rest of my party has already purchased the dress and loves it. I love the dress too, and I love how it matches the venue, and how its made really well for such a low price. I really don't want to make them buy new dresses and spend more money than they already have. While the wedding is 13 months away and everyone's body may change, I am at a bit of a loss because B said she'd need to lose like 100 lbs. to fit in the dress. If you were me, which of the following solutions would you pick?
A) Apologize to the bridal party, and pay for the old dress so they can purchase a new one
Wait a year to see what will happen (hopefully they will all fit into the dress)
C) Wait it out and discuss what everyone wants to do (I am open to having mismatched dresses but would prefer that on everyone, not just one member who isn't a MOH).
If option A is best, I would be worried about how to go about telling the BP why I am changing the dresses. I know them, and they will definitely be asking questions. I would hate to hurt anyone's feelings, especially because the only reason I'm changing it is because of one person being unable to fit into the dress. I struggle with my own weight and would never in a zillion years tell someone to lose weight to fit into a dress or single them out due to weight! I am kicking myself right now because I know I should have waited, and I certainly shouldn't have agreed to people purchasing the dress out this early. Any suggestions/help would be awesome, and I appreciate it in advance!