10 Insane Changes Movie Sequels Made

10. Luke & Leia Are Actually Siblings - Star Wars: Episode VI – Return Of The Jedi

In the second Star Wars film, The Empire Strikes Back, Princess Leia (Carrie Fisher) famously plants a rather passionate lip-lock on Luke Skywalker (Mark Hamill) in an attempt to prove to Han Solo (Harrison Ford) that she doesn't love him.

This would be all well and good, except for the fact that sequel Return of the Jedi reveals Luke and Leia to be siblings, making that cheeky kiss seem considerably ickier in retrospect.

It's even more questionable given that, after learning the news, Leia tells Luke, "Somehow I've always known," in turn making the unfortunate implication that Leia knew on some level that she was macking her brother at the time.

In reality this awkward change is simply a result of George Lucas not sufficiently planning the Star Wars trilogy out, as Luke and Leia weren't intended to be siblings during production of The Empire Strikes Back.

But as widely mocked as the familial twist is, the franchise has weathered it pretty damn well considering. Imagine how social media would react to a movie sequel inadvertently introducing incest in this day and age.