The shortest one of the attendants explained the rules to us, "Its the guess which twin is which game. You'll observe them as they entertain this lady here, and then they will go and change their clothes. You are allowed to ask them each three questions. After the questions you will have to guess which one is which."
This seems straightforward. Now, lets see how they act...
Sonoko was whisked away to another room by the twins. Haruhi stepped in cautiously after them.
The tall, stoic noted, "Young boy, Haruhi has been the only one to understand those two and distinguish them in their game thus far."
Apparently a changing room, a few minutes later Sonoko exited adorned with a chic black dress and fur hat. She was completely enamored by the atmosphere and the attention she was receiving. The room we were lead into at that point was noticeably chilly. From behind me, Haruhi placed a wool fleece on my shoulders with a warm smile.
I see now.
I walked over to the stoic one, and whispered my deduction to him. His eyes widened and then coalesced as he became composed. He nodded as I asked him two questions. I gave him some directions and then told him, "Keep it a secret, ok?"
I ran to Haruhi, but before I said anything, "Ah, I can't give you my secret to telling them apart. That wouldn't be fair would it now?"
"Don't worry. I just want to share my plan with you." In the background I could hear Sonoko as she ate some Russian hors d'oeuvres and laughed at what the twins were saying.
The princely one appeared near us suddenly and tried to listen in on our conversation. Haruhi scolded him lightly saying, "Eavesdropping is very unbecoming of you, President Tamaki."
I looked cautiously toward Sonoko and the twins.
There!
I had what I needed to expose them.