Stars hit the red carpet at the iHeartRadio Much Music Video Awards

The iHeartRadio Much Music Awards, honoring the year's best music videos, drew scores of young stars to Toronto, Canada, on Sunday night.

Gigi Hadid, who hosted the evening, rocked a glamorous red Mugler pantsuit with a thick diamond choker. Edgy slits on her pantlegs revealed sporty black and red sandals. (Similar pants here.) Red lips and a casual updo completed her look. Contrasting the model's serious and sophisticated ensemble was Lucy Hale, who donned a disco-inspired silver strapless minidress with matching silver strappy heels. (Similar dress here and here.) A sleek, straight bob and dark lips completed her adorable party look.

Hale's fellow "Pretty Little Liars" stars Shay Mitchell and Ashley Benson both donned sexy silk frocks with thigh-high slits. (Similar here and here.) Nick Jonas, who recently featured Mitchell in his music video for "Close," also made an appearance, rocking a funky patchwork leather jacket.

See these looks and more in the slideshow above.