PROJECT RUNWAY DOUBLES DOWN: The original fashion competition show now has a mini-me. “Project Runway Junior,” debuting this fall on Lifetime, will showcase competition among designers aged 14 to 17. Cohosted by Tim Gunn and model Hannah Davis and judged by “Project Runway” winner Christian Siriano and editor Aya Kanai, the competition will unfold this summer in New York and air this fall. Meanwhile, Season 14 of “Project Runway” premieres August 6 with hosts Tim Gunn and Heidi Klum and judges Nina Garcia and Zac Posen. Also currently in production for an early 2016 premiere is Season 5 of “Project Runway All Stars” with host Alyssa Milano, judges Isaac Mizrahi and Georgina Chapman, and mentor Zanna Roberts Rassi of Marie Claire.