couldn't have looked happier to be busy filming television's longest-running primetime live-action series. 

The 57-year-old actress' smile was on full display on the set of Law & Order: Special Victims Unit in on Tuesday. 

She sported her usual costume as NYPD Captain Oliva Benson in a chic black suit and button-up blouse.

Hard at work: Mariska Hargitay couldn't have looked happier to be busy filming television's longest-running primetime live-action series

Her fitted jacket and slacks proved her status as the most fashionable police officer on television.

The star's stunning brunette locks were done up in loose waves, and blew in the breeze of the portable fan she carried to stay cool between takes.

She also carried a stylish pair of black aviator shades in her hand, which she donned on her face as she struck a cool pose later in the day.

Overjoyed: The 57-year-old actress' smile was on full display on the set of Law & Order: Special Victims Unit in New York City on Tuesday 

Costume: She sported her usual costume as NYPD Captain Oliva Benson in a chic black suit and button-up blouse. Her fitted jacket and slacks made proved her status as the most fashionable police officer on television

Her beautifully made up features could be seen as the crew prepared that day's shot. 

Mariska shot her outdoor scene in front of  St. Jude Catholic Academy, as the character prepared to save more children in peril across the Big Apple.

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