Any Twihard who was tantalized by said images -- more of which were officially released by Summit Entertainment last month -- might want to take a deep breath. Because on Tuesday, a new trailer for November's "The Twilight Saga: Breaking Dawn -- Part 1" hit the Web, and it's a little racy.

Fans of Stephenie Meyer's beloved book series, of course, know that the characters played by Kristen Stewart and Robert Pattinson wed in "Breaking Dawn" and quickly consummate the marriage during their honeymoon. That leads to trouble for Bella, who becomes pregnant with Edward's baby -- a sort of vampire-human hybrid that threatens its mother's health.

In an interview with The Times last year just before production of the film began, Stewart warned filmgoers that the prosthetic belly she wears in the first part of "Breaking Dawn" is "immense." "It gets so massive at some point that it actually looks inhuman. Like it’s hurting her. There are striations of bruises," the actress said.

In the trailer, posted below, we finally get a glimpse of pregnant Bella -- and indeed, she looks unwell. As her stomach morphs and swells, Bella grows gradually more pallid until she lets out a guttural scream during a labor scene, where the preview ends.

But the trailer doesn't skimp on the skin. Edward is seen bedding Bella and the pair later kiss under a waterfall; Taylor Lautner, who plays Jacob, is -- not surprisingly --  distraught and once again shirtless.

Lautner, meanwhile, is busy readying himself for the release of his first major non-"Twilight" film, the action flick "Abduction." The film, out Sept. 23, marks the young star's hopeful transition to a more grown-up acting career.

Judging by the new "Breaking Dawn" trailer, it appears the "Twilight" stars are already tackling progressively more adult subject matter just fine.