Ashley and Cara first sparked dating rumours last month when they were photographed sharing a kiss at Heathrow airport - they've also been hanging out on Instagram.
Cara is in Toronto promoting her new film, Her Smell. Last night, she and Ashley made a joint appearance at a cocktail party celebrating the movie. Although they didn't walk the red carpet together, they were spotted chatting to The Handmaid's Tale stars Elisabeth Moss, Amber Heard, and director Alex Ross Perry.