Entertainment Tonight ET Online ETOnline.com

Kat Dennings was one of the year's biggest breakout TV stars and now 2 Broke Girls co-creator Whitney Cummings is explaining how the Thor actress snagged the primo role of Max!

Turns out that many actresses who auditioned for the role made Max seem like a straight up bitch. "But Kat does it, and you're completely in love with her," Cummings says in this ETonline exclusive season one DVD sneak peek!

To see how Beth Behrs, who plays Caroline, snagged her role, watch the video -- and pick up the first season of 2 Broke Girls on DVD, September 4. Click here to pre-order!