Mariska Hargitay and Peter Hermann attended the premiere for 'Vie Privée (A Private Life)' at the 78th annual Cannes Film Festival. See their red carpet looks here!

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To millions of TV viewers, Mariska Hargitay is Olivia Benson, the tough but compassionate NYPD captain who has been tackling crimes for the past 26 years on Law & Order: Special Victims Unit. Away from the cameras, Hargitay channels that same fierce dedication into her real-world role as a powerful advocate for survivors of sexual assault.

The new look is courtesy of hairstylist Chris McMillan, who likely added some temporary extensions for the night. But first, colorist Cassie Cohen ensured Hargitay's color was fresh for the red carpet and complemented her stunning Carolina Herrera gown. Related: 7 Best Root Touch-Ups for Gray Hair, According to Celebrity Hairstylists

SVU" actor dazzled in pink and polka-dot ensembles at the France international film festival, where she promoted her documentary about her mom.

The actress shared the news while celebrating the debut of her new film about her famous mom, Jayne Mansfield.

Mariska Hargitay, Jayne Mansfield's daughter, reveals her biological father is singer Nelson Sardelli, not Mickey Hargitay, the man who raised her.

Mariska has two older brothers, Miklós Hargitay and Zoltán Hargaitay, as well as three half-siblings, Jayne Marie Mansfield and Antonio “Tony” Cimber (from her mother’s first and third marriages, respectively) and Tina Hargitay (from Mickey’s first marriage).