Need help with Bridesmaid dresses.

A few of my bridesmaids and I went looking for dresses tonight and I found one that I love but the sample was a size 8. None of us can fit into a size 8. 2 of us tried but it's really hard to tell when it's clipped and not zipped right.

Does anyone know of a place that has some larger sample sizes??

TIA!

(oh and BTW it was Bridal Reflections in Massapequa and the dress was Bill Levkoff style# 557)