my friends wedding is next Saturday and I'm just supposed to go by myself. I don't really wanna go…

my friends wedding is next Saturday and I'm just supposed to go by myself. I don't really wanna go by myself but I have no one to go with. I can't bring my daughter which made me sad bc I feel like I'm just gonna be sitting there so out of my comfort zone and just feeling awkward. what do you even wear to weddings? I don't have anything nice that actually fits lol