Premise: Then I put on her last winter 's party dress .<br>It was such a pretty pale yellow thing , with touches of black lace , and it did n't matter about its being a little old-fashioned , since it fitted me like a glove .<br>Finally I stepped back and looked at myself .<br>I saw a woman in that glass ... a tall , straight creature with crimson cheeks and glowing eyes ... and the thought in my mind was so insistent that it said itself aloud : `` Oh , I wish Sidney could see me now ! ''<br>At that very moment the maid knocked at the door to tell me that Mr. Elliot was downstairs asking for me .
Hypothesis: The dress belonged to her sister