I am really petite--no bust or booty to fill out a dress. So I finally found a dress after a week of frustration in search of a dress that would just fit me while flatter my nonexitent figure at the same time. Ok, I bought a sexy, orangey-red dress with my best friend at Cache. I came home and excitedly showed my sis and my grandma but (dun dun dun) my sis told me that my other friend already bought the same dress, except its a different color (royal blue). I told only a few friends about it. I dont want her to know about it or it would ruin her bubble. Everyone has been telling me that I look better in the dress, though. lol--

--well, the dress does flatter me better since the color flatters Asian skin better; not to brag and all, but my flat stomach looks good in it, even though i dont have much of a bust.
AGHHH!! I dont know what to do! She wants to see my dress but I keep on finding excuses. She is gonna be hysterical when she sees me in the dress. OMG!! I am going crazy. Oh, btw, she talked to my sis about finding another dress since the dress is too plain and simple for her liking. And said that if she saw another girl at the prom in the same dress she would kill em (oh, poor me, bless my soul). Help! What do I do?
Oh, she came over to my house just this afternoon to get the skirt shortened. (its so long that you would trip if its not altered, it goes way past the feet, several inches all over the floor). She wanted to see my dress!!!!!!!

But, again I made a lame excuse that its getting fixed. What should i do? tell her?