Hayden Panettiere Dons Daring Dress, Designed Her Own Engagement Ring

Meow! It seems Hayden Panettiere is already channeling Halloween. The newly engaged star showed up to the Environmental Media Awards on Saturday, October 19, clad in an orange-and-black number—that also happened to be skintight… and see-through.

Comprised of a black lace top with crisscross bandage accents, the dress showcased the 24-year-old star's décolletage and svelte bod. Meanwhile, a bright orange skirt revealed her killer backside. The blonde beauty completed her daring ensemble with sky-high stilettos and a sleek topknot.

But even her head-turning curves couldn't upstage her best accessory: her enormous engagement ring, which, apparently, she designed herself.

"[Montblanc] made me this amazing book where they did a bunch of sketches," she told E! News. "I told them my idea over time and tweaking things here and there, it came to fruition."