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She voices the character Mayor McCaskill in the animated film The Lego Batman Movie.

And on Saturday, Mariah stepped out for premiere of the movie in Westwood, California.

The 46-year-old singer, who showed off her curves in skintight denim, brought her five-year-old twins Moroccan and Monroe with her to the daytime event. 

Devoted mom: On Saturday, Mariah stepped out for premiere of the movie in Westwood, California with her five-year-old twins Moroccan and Monroe

Mariah wore a glittering bomber jacket featuring blue, green and red hues.

The mother of two left the cover up partially unzipped, revealing her ample cleavage.

The Grammy award winning artist slipped on second skin jeans with sky-high silver heels.

She added diamond accessories, including bracelets, a necklace, hoop earrings and rings. 

Wow: Mariah wore a glittering bomber jacket featuring blue, green and red hues

Beaming: She voices the character Mayor McCaskill in the animated film The Lego Batman Movie; pictured with her children

Fit like a glove: The Grammy award winning artist slipped on second skin jeans with sky-high silver heels

Mariah shielded her eyes with gold and black sunglasses while rocking nude lip gloss  on her pout and rosy blush on her cheeks.

She styled her long blonde locks in waves, opting to pin it back partially at the crown.

Her boyfriend Bryan Tanaka was also on hand at the premiere, although he didn't walk the carpet.

The dancer chose to keep his ensemble all black.

The 33-year-old wore a leather jacket with a matching shirt and bottoms. 

So proud: Her boyfriend Bryan Tanaka was also on hand at the premiere, although he didn't walk the carpet

Her biggest supporter: The dancer chose to keep his ensemble all black

CAsual look: The 33-year-old was seen snapping pictures with his smart phone while rocking a leather jacket with a matching shirt and bottoms

Mariah's daughter Monroe looked sweet in a pink, green and white dress with a matching headband.

Son Moroccan wore a black blazer with trousers, adding a white button-up shirt.

Before hitting the carpet, Mariah shared a photo to her Instagram while posing with Monroe. 

Flawless: The mother of two left the cover up partially unzipped, revealing her ample cleavage

 Looking good: Mariah shielded her eyes with gold and black sunglasses while rocking nude lip gloss on her pout and rosy blush on her cheeks

Family first: Her daughter Monroe looked sweet in a pink, green and white dress with a matching headband while son Moroccan donned a tuxedo

For her fans: Mariah was seen signing autographs while keeping her kids close by

So excited for the premiere: Before hitting the carpet, Mariah shared a photo to her Instagram while posing with Monroe

Amber Rose arrived to the premiere with her son Sebastian Taylor Thomaz, three.

The 33-year-old looked incredible in black skinny jeans with a shimmery gold button-up top.

The doting mother hit the yellow and black carpet in point cut-out booties, adding chunky earrings.

 Good looking family: Amber Rose arrived to the premiere with her son Sebastian Taylor Thomaz, three

So happy: The 33-year-old looked incredible in black skinny jeans with a shimmery gold button-up top

Devoted: The doting mother hit the yellow and black carpet in point cut-out booties, adding chunky earrings

Her son looked adorable in his leather jacket with his plaid shirt - complete with a Batman mask on his face. 

Rosario Dawson cut a stylish figure in a strapless black jumpsuit, featuring a cinched waist and loose bottoms.

She styled her dark tresses loose with waves and kept her makeup minimal.

The actress, 37, voices Barbara Gordon, also known as Batgirl in the film.

Fancy: Rosario Dawson cut a stylish figure in a strapless black jumpsuit, featuring a cinched waist and loose bottoms

Strike a pose: She styled her dark tresses loose with waves and kept her makeup minimal

So pretty: The actress, 37, voices Barbara Gordon, also known as Batgirl in the film

The Lego Batman Movie is a superhero focused computer animated movie; it is set to hit US theaters on February 10.

The 3D animated movie, directed by Chris McKay, is about Batman and his journey on finding himself, making friends and teamwork.

Will Arnett, Zach Galifianakis, Michael Cera, Zoe Kravitz, Conan O'Brien and Ralph Fiennes also voice characters for the film. 

Will, 46, looked handsome in a tuxedo with a white collared shirt and a dark tie.

The actor, who voices Batman in the movie, sported a scruffy face.

Looking dapper: The Lego Batman Movie is a superhero focused computer animated movie; it is set to hit US theaters on February 10; Will Arnett arriving to the premiere

Having a laugh: Will, 46, looked handsome in a tuxedo with a white collared shirt and a dark tie

Good times: Michael Cera, Will, Zach Galifianakis and Chris Hardwick at the premiere

Jordana Brewster brought her son Julian to The Lego Batman Movie premiere.

The 36-year-old actress carried her three-year-old son in her arms while rocking a mini dress.

The dark haired beauty wore the patterned frock with a motorcycle jacket and strappy heels.

Actress Garcelle Beauvais looked pretty in a graphic sweater with ripped denim and suede boots 

What a beauty: Jordana Brewster brought her son Julian to The Lego Batman Movie premiere

Such a genetically blessed duo: The 36-year-old actress carried her three-year-old son in her arms while rocking a mini dress

Fun day out: The dark haired beauty wore the patterned frock with a motorcycle jacket and strappy heels

Glowing star: Actress Garcelle Beauvais looked pretty in a graphic sweater with ripped denim and suede boots