HELP!!!

okay...tomorrow (wednesday) morning we are taking invitation pictures...i know, leaving it to the last minute...literally...
anyways...i have no nice clothes that fit me anymore, hardly...what to wear???
i have one pair of jeans that fit...they are dark...like a light black...should i wear these with a nice form-fitting long sleeve shirt...or maybe a canada t-shirt???
should i wear a pair of board shorts with a t-shirt???
should i try to squeeze into a pair of cargo pants with a long sleeve shirt???
ARGHHH!!!
what do i wear???