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Chante Adams, ‘Roxanne Roxanne’

At the Sundance premiere of her biopic, hip-hop pioneer Roxanne Shanté said it was “a sign” that the ingénue Adams not only bares a striking resemblance to Shanté but also shares her name. The first-time film star doesn’t disappoint the cosmos: Adams exudes both relatability and braggadocio, and nails the rapper’s old-school cadence. (Photo: Sundance Institute)

The Breakout Stars of the 2017 Sundance Film Festival

Part of the fun of attending the Sundance Film Festival each year isn’t just discovering great movies — it’s also becoming acquainted with terrific new actors. And the festival’s 2017 edition offered a wealth of emerging talent, from young performers making their cinematic debuts (Ashleigh Murray and Chanté Adams) to TV stars crossing over into features (Jessica Williams and Kumail Nanjiani) to a veteran character actress (Lois Smith) proving that you’re never too old to be a Sundance superstar. Here are the 10 breakout Sundance performances you can expect to hear about all year. — Ethan Alter and Kevin Polowy