you add private screening of your new trailer for your movie with folks like kendall jenner and jadian smithwasn't it? >> yeah, fun. >> now you will hook up our "e.t." audience with something. >> sneak peek of the new trailer. >> you need to be the guardian of our future. >> what about the physicality of the role? you're tough in this movie. >> she saved the world so she -- you know, that isn't her job to be able to, you know -- i wanted to work out everyday. >> playing the title role, carra is laura lee, two outposts called alpha. what did your friend think at the screening? >> they were so excited. they were all really happy. they were like -- >> they were super -- >> yeah, they were. >> i never heard of it honestly but based off of the 70s french comics. way more epic than anything i've been involved with. it is a space opera. >> cara is charged with maintaining order among the humans. >> we have such a fun flirtatious energy in the movie. that's just kind of what we tried to keep going all the way through. >> look for rihanna, she does a quick change. >> tell me about casting reon . riha