News Awards & Events All the Stars Dressed for Summer at the iHeartRadio MuchMusic Video Awards By Faith Cummings Faith Cummings Twitter Faith Cummings is a copywriter, editor, and journalist with over a decade of experience. InStyle's editorial guidelines Updated on June 19, 2017 @ 08:00AM Pin Share Tweet Email Trending Videos Photo: Getty (3) Summer is just days away, and Canada kicked off the celebration with one of the most vibrant red carpets! The stars stepped out in Toronto, celebrating the 2017 iHeartRadio MuchMusic Video Awards, ready for summer in a sea of slip dresses, sheer frocks, and pops of color. Before hitting the stage for musical performances, Camila Cabello and Niall Horan posed on the colorful carpet. The newly-minted solo artist was a vision in a ruffle-accented cold shoulder LWD with an artful motif, while the former One Direction member added a teal suede jacket to his all-black outfit. Other standout looks included Shay Mitchell in an ethereal August Getty Atelier sheer white jumpsuit and Kat Graham, who wore an Elsa Schiaparelli Couture suit. Check out more of the night's most stylish looks below. 01 of 07 Iggy Azalea Isaiah Trickey/FilmMagic 02 of 07 Camila Cabello George Pimentel/Getty 03 of 07 Darren Criss Isaiah Trickey/FilmMagic 04 of 07 Keke Palmer George Pimentel/Getty 05 of 07 Niall Horan George Pimentel/Getty 06 of 07 Shay Mitchell George Pimentel/Getty 07 of 07 Kat Graham George Pimentel/Getty