Obviously for wedding lingerie, you spent more to look sexy and sensational. After spending, so high on your lingerie you want them to long last. You can achieve that with little special care. Try to avoid your washing machine and opt for hand-wash to keep your delicate fabric looking new and lively.
If hand wash is not at all possible by you then put your lingerie into a bag before you put them in washing machine and set washing machine at cool temperature and delicate cycle.
Please do not dry them as drying can distort there shape especially your bra. After washing put, them on a drying rack to dry but not under sun as that can fade your sexy colorful under-things.