Give her

"Yeah, I got it for you. Hope this is the right size. Try it on and let me know if it fits?" You said awkwardly. You were about to lift up the blanket covering your lower body but you glimpsed what you were wearing instead of a boxer.

"I'll go change into the skirt!" Alison said happily as she skipped out of the room.

You stood up and walked towards your cabinet. You wanted to look for a boxer so you can go to the bathroom.

You picked up a grey boxer and as you about to change, Alison barged in.

"Alex, by the way, actually I've already tried .... !!!" You were wearing the pink panties Cathy got for you and nothing else in front of your sister.

"Why are you wearing pink underwear? Isn't that panties?"

You nodded. "Listen, it was an accident. I didn't want to, but I am currently having an internship with La Senza."

"Isn't that the lingerie brand that sells panties and bra?"

"Oh, I didn't know you like La Senza, why not First Stories or Victoria's Secret? Hahahaha! So did you get hooked up with any young girls? But then that doesn't really explain why are you in panties."

"I didn't want to. I was just trying out some products in the company, my boss told me to do so to understand the product. Please do not tell Mummy, she doesn't have to know."

"Get more panties from La Senza tonight, or else I'll tell Mummy. Sissy little brother."