Sporting some seriously straight tresses, the 21-year-old joined her co-stars Elizabeth Banks, Liam Hemsworth and Josh Hutcherson along with director Gary Ross on the red carpet at the Cinema Gaumont Marignan.
Jenn looked beautiful in the knee-length long sleeve black cocktail dress that had a zipper detail at the front left hip that unzipped to her shoulders to show off a sassy full open back.
What a change from her previous two premiere looks!
She completed her look with a vixen red pout and a pair of textured gold strappy platform sandals with a stacked heel.
It looks like the shoes may have been a tad too big — or small, as her heel and toes kept slipping out of them!