Banks will step behind the camera to direct a two-minute film featuring the show's final four contestants – Ann, Chelsey, Jane and Kayla.
"A lot of designers and people in the fashion industry are feeling like the future of fashion is not just still photos, but they've been doing mini movies where the models are acting things out," Banks, 36, explains.
In past cycles of Top Model, it's become a rite of passage for the contestants to participate in a shoot with Banks acting as photographer, but graduating to film directing proved to be a challenge.
"Photography has been my own personal hobby for the last 8 years, so I was ready for movement," she says. "But it was so hard."
The film, which will air at the end of Wednesday's episode (8 p.m. ET, on the CW), was shot at a castle in Verona, Italy, and will incorporate high-fashion outfits, boyish looks, and crying scenes which channel an "over-the-top Italian drama," Banks says.
"It was 100 degrees and the girls were really struggling with the heat," adds Banks, who wasn't a fan of the madhouse on-set process, which took a full day to complete. "But when I got to editing, I was like, 'Oh my god, I love this!' "
And she will certainly get a chance to do it again. After saying goodbye to her daytime talk show earlier this year, Banks is focusing on the launch of Bankable Studios, a N.Y.-based film production company.