"If you'll be more comfortable," Harry said, his thumb stroking the back of her hand. "I hope you don't mind my saying this, but I think you look adorable like you are."
"You have grown up," Hermione said.
"Thank you, I think," Harry said.
"Still, either you're overdressed, or I'm underdressed . . . eep!"
OOOPS!! Slight case of foot in mouth syndrome, methinks?