Kaley Cuoco just dropped one heck of a curve display. The "Big Bang Theory" alum's Wednesday night Instagram stories were nearly all promo for just-released HBO Max series "The Flight Attendant," with the 35-year-old posting another shot of her plunging black dress look while channeling her thriller's alter ego, Cassandra Bowden. Kaley, followed by 6.2 million, was crouching down, she was looking drop-dead gorgeous, and her "All tangled up in a mess" caption shouted out a character who definitely isn't Penny. Check it out below.