"Well we need to see your footprint before you can enter the guild!"
"But then you'd see up my skirt! Besides, I'm wearing shoes, anyway!"
"Well just take the shoes OFF, then!"
"I'm wearing tights underneath them! I'm not going to strip naked just so you can look up at my bottom!"
...Another inherent flaw of the Wigglytuff Guild's security system; it completely screws over Pokemon who wear clothes. XD