How did.....?

Last night we called the girls for dinner. E came running. A still did not come after a few calls. This is not unusual, so once everyone was seated, I went back to the bedrooms to get her myself. She met me halfway down the hall, telling me in a very pitiful voice, "I need help!"
A and E had been "dressing up". Apparently, Miss A tried to put on one of E's "bras", that she has from one of her matching sets. This is as far as she got...