Mariska Hargitay beams with joy on RARE outing with daughter Amaya, 12, at Taylor Swift’s Eras Tour concert film in Los Angeles

Mariska Hargitay proved she’s the ultimate cool mom as she brought her daughter Amaya to Taylor Swift’s The Eras Tour concert at the Grove on Wednesday night.

As the duo prepared to enjoy an advanced screening of the pop superstar’s concert film, which runs for 2 hours and 48 minutes, the Special Victims Unit star, 59, made a rare appearance on the red carpet with her middle child, 12.

For the special occasion, the Golden Globe winner, who starred in Swift’s 2014 music video for her hit single Bad Blood, wore a long orange coat, black V-neck top and light blue jeans.

The mother-of-three accessorised her effortlessly cool ensemble with a black belt, which matched her nail polish, and a glamorous make-up look.

Cute: Mariska Hargitay proved she's the ultimate cool mum as she brought her daughter Amaya to Taylor Swift's The Eras Tour concert at The Grove on Wednesday night

Cute: Mariska Hargitay proved she’s the ultimate cool mum as she brought her daughter Amaya to Taylor Swift’s The Eras Tour concert at The Grove on Wednesday night

Swifties: As the couple prepared to enjoy an advanced screening of the pop superstar's concert film, which runs for 2 hours and 48 minutes, the Law & Order: Special Victims Unit star, 59, made a rare appearance on the red carpet with her middle child, 12

Swifties: As the couple prepared to enjoy an advanced screening of the pop superstar’s concert film, which runs for 2 hours and 48 minutes, the Law & Order: Special Victims Unit star, 59, made a rare appearance on the red carpet with her middle child, 12

Meanwhile, her baby girl looked adorable in a light blue tulle mini dress, which paid tribute to Swift’s upcoming 1989 remake, and a cropped black leather jacket.

The budding fashionista styled her outfit with a pair of Celine combat boots, a delicate silver necklace and braided hair.

After posing for photos together, Hargitay and Amaia were seen holding hands, before hanging out with the other Swifties.

At one point, the daughter of bodybuilder and actor Mickey Hargitay and actress Jane Mansfield was seen hugging and mingling with other attendees.

Her other two children, who she shares with husband Peter Herman, August, 17, and Andrew, 11, did not appear to be present.

Guests were treated to items such as popcorn buckets, soft drink mugs and guitar picks emblazoned with Swift’s face.

Meanwhile, the Swifts paid tribute to Taylor by dressing up as their idol, an insider at the event told DailyMail.com.

‘The Swifties went all out – many dressed like her from the iconic music videos and had the time of their lives.’

“The fans went crazy as soon as she arrived, screaming and chanting her name,” the source added.

Stylish: For the special occasion, the Golden Globe winner, who starred in Swift's 2014 music video for her hit single Bad Blood, wore a long orange coat, black V-neck top and light blue jeans

Stylish: For the special occasion, the Golden Globe winner, who starred in Swift’s 2014 music video for her hit single Bad Blood, wore a long orange coat, black V-neck top and light blue jeans

Cool mum: The mum-of-three accessorised her effortlessly cool outfit with a black belt, which matched her nail polish, and a glamorous make-up look

Cool mum: The mum-of-three accessorised her effortlessly cool outfit with a black belt, which matched her nail polish, and a glamorous make-up look

Joyful: At one point, the daughter of bodybuilder and actor Mickey Hargitay and actress Jane Mansfield was seen hugging and socializing with other attendees

Joyful: At one point, the daughter of bodybuilder and actor Mickey Hargitay and actress Jane Mansfield was seen hugging and socializing with other attendees

Cute: The cardigan hitmaker (seen above) reportedly appreciated all the love her fans showed her at the event and was 'thrilled' to see so many of them

Cute: The cardigan hitmaker (seen above) reportedly appreciated all the love her fans showed her at the event and was ‘thrilled’ to see so many of them

The Cardigan hitmaker appreciated all the love her fans showed her and was ‘thrilled’ to see them in such numbers.

“Taylor was in great spirits and was so thrilled to see so many of her fans come out for the night.” She looked like she was having the best time.’

Inside the event, a number of memorabilia featuring the singer was on display, including a bag and large colorful mugs.

In addition to souvenirs, specialty drinks and an array of snacks awaited fans inside the venue.

And staff at the event wore badges featuring the singer in a glittering silver bodysuit as she performed on stage.