Both don't know

"I don't know. I think he looks like a size 12 or size 32, but it's good to help him verify. And he's not been punished, he's actually a well-behaved boy. Something happened that required him to be in a dress tomorrow and I'm helping him to select one."

"I see. What your name?" Nella asked.

"James." You decided that you shouldn't use your real name here. It's far too embarrassing and you're already blushing. Your mum almost burst into laughter when she heard you introducing yourself as James.

"Great, follow me to the changing room, shall we? Aunty, my colleague here will help you with your other request. I promise James will get what he wants and what he needs." Nelly smiled as she assured your mum that you will be in good hands.

"James, follow the lady to the changing room, she'll help to take your measurement." Your mum said, making emphasis on the word James to remind you that you're not really called James.

You followed Nella to the changing room, it was pretty big with 2 walls of mirrors. It could probably fit a single bed in it if they want to. There was a stool and a shelf in the room. Nella took a measuring tape from one of the shelves and she measured your rough height.

"Take off your shirt, I need to measure your torso. Do you need to wear a bra for the event tomorrow? The measurement would be different if you need to wear one."

You wondered why she can't measure your torso over your shirt, your t-shirt material isn't that thick. You didn't clear your doubt but you pulled the shirt over your head and exposed your lean hairless torso to Nella. "I guess I might need to." You throw your T-shirt on the stool.

Nella signaled for you to raise your hand high up and proceeded to take measurements of your chest and shoulder. She proceeded to exit the room and closed the door behind her.

Nella came back with a light blue bralette and a bright red tube bra and said: "These should provide you with realistic padding for a dress. Would you like to wear the light blue one or the red one? Don't worry, mummy doesn't have to know."