Frozen Sisters Ballerinas

There's a major ballet performance taking place in frozen Arendelle this evening and guess what: Elsa and Anna will be the two prima ballerinas! Now princess Anna has made up her mind about the gorgeous tutu dress that she'll wear on stage, but her sister, Elsa, can't decide! Should she go for a superb, diaphanous white ballerina dress or maybe for a gorgeous sheer blue lace-made one? Should she accessorize it with black or rather white, ankle-length gloves? What exquisite ballerina hairdo should she go for? Could you help her decide?