Ask the a-line wedding dresses shop consultant to pull dresses for you to try on that are similar to the magazine clipping bridesmaid dresses and a few that exemplify other styles that she thinks would compliment your body type. Try on many cheap prom dresses in as many different styles as possible, even if you think they are not what you want. Try on a-line wedding dresses with different skirt styles and top styles to get a feeling of what looks and feels best on you. Ask your friend’s opinion of every dress and note the pros and cons of each style. Have your friend take a picture of you in each dress for reference when you leave the dress shop. Pick the bridesmaid dresses style that you looked the best in. Visit at least two more cheap wedding dresses shops and ask to see dresses of a similar style before selecting your final prom dresses online.