Historia became Queen and she hit Levi because she know he can't do anything with it.

Historia: Ha! I'm Queen so you can't do anything about it!

She's smiling and acting like rebel or strongest, but suddenly Levi smiled for the first time and everyone froze in shock. You covered your mouth and with smile watching Levi.

Levi: Thank you, all of you.

He said with smile and now he look extremly pretty. Smile suits him!