Watch the hilarious trailer for Amy Schumer's "Trainwreck"

As if you needed another reason to be excited for summer, the official trailer just arrived for "Trainwreck," the upcoming (and, based on this first look, hilarious) romantic comedy written by/starring Amy Schumer and directed by Judd Apatow.

Schumer plays a magazine writer who's been taught since childhood that monogamy isn't realistic, and lives that credo via a series of casual flings and cavalier attitude about romance. (Case in point: "I'm just a modern chick who does what she wants. Last week it was this guy.")

That, however, could change when she's assigned to profile a sports doctor (Bill Hader), who -- gasp! -- calls her after they hook up and has the potential to be more than just a fling. Bonus: LeBron James is one of his patients. The basketball player appears as himself, and is apparently a fan of "Downton Abbey."

"Trainwreck," which also stars Brie Larson, Tilda Swinton and Vanessa Bayer, arrives in theaters July 17.