Luna behaves a bit odd (for her)

"This is interesting," Hermione said, stll bend over the book. Some of those are conjurations while others seem to cause some effects. I think the numbers here are page numbers with more details. Finally she looked up, wondering why Luna wasn't responding. "Luna?"

The blonde witch was still standing there but had opened the top of her shirt, revealing that she was wearing a Ravenclaw blue bra below it.

"What are you doing?"

"Feeling hot, so getting some air."

"You can't start undressing in the library. What if someone comes in."

"Hopefully with some ice cream," Luna responded and slowly pulled off the shirt. As she was standing there only in her skirt and bra, Hermione couldn't other than notice the perky tits her friend had. And she started to feel super hot in her shirt too. Was this an effect of this sweet smell? Hopefully it hadn't gone too far.

"Let me help you," Luna said and Hermione realized that unconsciously her hands had moved to her tie, pulling it open.