I currently can't purchase a new dress for this upcoming summer wedding. So I'm wondering if some of the dresses I have now are appropriate. One option is a navy blue dress with white polk a dots that falls just above the knee. It goes well with pearls. Another option is a black and white print (amount of black and white are equal) which falls just below the knee. I'm wondering if the blue dress is too short and if the black and white dress has too much white in it. Are either .appropriate?