One moment in the Fantastic Four trailer may have accidentally spoiled a major Marvel rumor that won't go away: Sue Storm is pregnant

The Fantastic Four: First Steps trailer.

One Marvel fan has somehow spotted a massive Sue Storm-related spoiler hiding in the background of the new Fantastic Four: First Steps trailer.

At the 54-second mark, our eyes should be focusing on Johnny Storm getting his flame on and shooting off into the sky. Instead, @davjolie on Twitter scanned the background and noticed Vanessa Kirby's Sue Storm being helped away and clutching her stomach. See for yourself below.