Thinking about prom dresses?

I know that prom is far away but, who doesn't obsess about buying the "perfect dress" or bag or shoes? I love the dress on the right because is it so simple yet not.  It comes in 3 different colors (emerald, berry, and blue.)  The middle is the wild child in everyone.  I think it would be great to try on but not sure about buying it.  I do always dream about wearing sparkles.  I love the last dress because it does have straps but is simple like the left most dress.  Last year I wore a strapless dress and this year I think I want straps.  This dress also comes in multiple colors (yellow, pink, and purple.)

Aqua long sequin dress / Lauren Ralph Lauren ruched dress / Lauren Ralph Lauren pleated dress / Vince Camuto pumps / Flounce black platform sandals / Flounce platform sandals / Jessica Simpson patent leather pumps