Pierce is the prince, you're his assistant yet he doesn't know you're A girl since you're pretending to be a boy to work for him as an assistant

He wanted to check on you but you were sleeping in your room, he sat beside you and noticed something on your chest. He got curious and wanted to check it out

"I shouldn't.." Pierce thought to himself

He was hesitant but he gathered the courage to unbutton 2

When he noticed your chest line, his cheeks flushed and covered it back