Chrissy Costanza from the band - Against the Current.
I don't know why I haven't seen some love for her. She is pretty hot singer, mostly known from the League of Legends song of ''Legends Never Die''. Like almost every performance she wears skirts, throwing nice views basically on each frame.
Just as example, take a look at this video, where she gives plenty of nice views (also closeups). Would like to see more content about her.