Don't make your bridesmaids stand up for your outdoor ceremony without any kind of wraps because they will look miserable. Like this:

(from a college friend's FB page...it was her wedding)
ETA: Ok, maybe they don't look miserable, but none of them look particularly comfortable.
ttc chart
BFP 8/01/12, EDD 04/10/12, mm/c @ 6wks, discovered at 8wks, D&C 9/05/12