Story By: Anastasia Smirnova, Sub Editor: Joseph Golder, Agency: Central European News Video Credit: CEN/@yulia_rybakova_ The Russian plus-size model who made headlines when the trail of her dress was ripped off on the Cannes Film Festival red carpet has vowed to slim for her health. Yulia Rybakova, 31, is so determined to lose weight that she recently posted a…