The two posed side-by-side in black shades – the 26-year-old actress wearing a tailored black blazer and cuffed tweed pants with a tuxedo stripe detail, while her 34-year-old musician girlfriend showed off her midriff in a cropped long-sleeve plaid top and chic black plants.
The event featured collections from ten emerging designers of all kinds from across the country — each competing for the top prize of $400,000, which will be announced next month.
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While this the first time the new couple have hit the carpet together, they’ve been nearly inseparable since Stewart invited singer St. Vincent to the New York Film Festival screening of her new movie, Certain Women, on Oct. 3.
“They have spent almost every day together since Kristen brought St. Vincent to her premiere on Oct. 3,” a source told PEOPLE.