caitlin1214 said:You don't really HAVE to do anything, but if she's a good friend, I'd say bring a gift.
I agree, if it were just a casual acquaintance or work colleague, then you wouldn't be expected to bring a gift, just a card, whether you were invited to both the ceremony and reception, or just one of them.
But as she's a friend of yours, then i'll echo everyone else and say 'bring a gift'