VIDEO: Lady Gaga Talks to Stephen Colbert About Her A STAR IS BORN Co-Star Bradley Cooper

Last night, Lady Gaga was a guest on "The Late Show with Stephen Colbert." During the interview, Gaga said the TRUST she felt with her 'A Star Is Born' co-star Bradley Cooper was so strong that it didn't even feel like acting.

Watch the interview below!

In this new take on the tragic love story, Bradley Cooper plays seasoned musician Jackson Maine, who discovers-and falls in love with-struggling artist Ally (Gaga). She has just about given up on her dream to make it big as a singer... until Jack coaxes her into the spotlight. But even as Ally's career takes off, the personal side of their relationship is breaking down, as Jack fights an ongoing battle with his own internal demons.

The cast of "A Star is Born" also includes Andrew Dice Clay, with Dave Chappelle and Sam Elliott.

In addition to playing Ally, Gaga, who earned her Oscar nod for the song "Til It Happens to You" from "The Hunting Ground," performs original songs in the film, which she wrote with Cooper and a handful of artists, including Lukas Nelson, Jason Isbell and Mark Ronson. All the music is original and was recorded live.

"A Star is Born" is produced by Bill Gerber, Jon Peters, Bradley Cooper, Todd Phillips and Lynette Howell Taylor. Ravi Mehta, Basil Iwanyk, Niija Kuykendall, Sue Kroll, Michael Rapino and Heather Parry serve as executive producers. The screenplay is by Eric Roth and Bradley Cooper & Will Fetters.

Collaborating with Cooper behind the scenes are Oscar-nominated director of photography Matthew Libatique ("BLACK SWAN"), production designer Karen Murphy, three-time Oscar-nominated editor Jay Cassidy ("American Hustle," "Silver Linings Playbook," "Into the Wild"), and costume designer Erin Benach.

The Late Show with Stephen Colbert is the premier late night talk show on CBS, airing at 11:35pm EST, streaming online via CBS All Access, and delivered to the International Space Station on a USB drive taped to a weather balloon. Every night, viewers can expect: Comedy, humor, funny moments, witty interviews, celebrities, famous people, movie stars, bits, humorous celebrities doing bits, funny celebs, big group photos of every star from Hollywood, even the reclusive ones, plus also jokes.