Comedian Amy Schumer unveiled the first trailer for her upcoming comedy Trainwreck on her official Twitter page earlier today, giving fans a glimpse at the rising star's first starring role in a feature film. Amy Schumer also wrote the screenplay, loosely based on her own life experiences, following a woman named Amy (Amy Schumer) who will do anything to avoid commitment, until she falls for a doctor, played by Bill Hader.

Director Judd Apatow returns to the big screen for his first directorial effort since 2012's This Is 40 with Trainwreck. The trailer also features a number of amusing supporting roles, including NBA star LeBron James as a version of himself, who apparently is a huge fan of Downton Abbey, and WWE Superstar John Cena as a man who doesn't appreciate being compared to Mark Wahlberg. The cast is rounded out by Brie Larson, Colin Quinn, Vanessa Bayer, Tilda Swinton, Mike Birbiglia and Barkhad Abdi.

RELATED: Win a Trainwreck Blu-ray Party Pack

To celebrate the trailer's release, Amy Schumer is also hosting a Q&A on her official Twitter page today at 5 PM ET. Fans who wish to ask her a question can do so by using the #AskAmySchumer hashtag and tweeting to her official Twitter page @AmySchumer. Check out the first footage from Trainwreck, which could be one of the biggest comedy hits of 2015 when it hits theaters on July 17.