Fridge / Supergirl (2015) S5E1 "Event Horizon"

• When Kara first turns into Supergirl in front of Lena (and displaying her excitement at her new pants), Lena is positively beaming and appears generally amazed. We later learn that this is all an act and will show how she is able to fool Kara over the course of 5a. It's also a great piece of acting by Katie McGrath.