[victoriana]

Well since the wedding is in June, I think it's a little ridiculous of her to expect you to order a dress by October, especially since you're pregnant. It's David's Bridal and that seems like a fairly popular style, so I don't think the bride needs to worry about them cancelling it. If I were you, I would just tell her your situation with the money and explain to her that your size now and your size next June are going to be completely different things. If she doesn't understand that, I would back out of the wedding party. If she is going to throw a hissy fit about when you order the dress, especially considering your situation, then she's going to be a complete bridezilla who you won't want to be around. I hope everything works out with the wedding!