FG dresses

GMB - I picked out the flower girl dresses this weekend for my two beautiful little nieces that will be our flower girls. Its such a cute dress ... very little girl like (the girls are 3 and 6). One thing though, does anyone know where I can go to buy little fancy jackets for them as the dresses are sleeveless and I want them to have something to cover their arms if they get chilly. I was thinking perhaps a store that sells communion dresses may have them. Any other suggestions? TIA