Hailee Steinfeld hits AMA red carpet in black suit and bra

She just performed her song Let Me Go live for the first time.

And 20-year-old Hailee Steinfeld was suited up for the big event when she hit the 2017 American Music Awards red carpet on Sunday at the Microsoft Theater in Los Angeles, with her blazer open to expose her black leather bra – and plenty of skin.

Later on in the night the Academy Award nominated actress-turned-singer donned a sequined dress and thigh high boots for the performance of her latest single in front of a room full of stars, including Demi Lovato and Selena Gomez.

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The actress/singer paired the sexy undergarment with a black blazer with ornate buttons and high jutting shoulder pads.

On her lower half the True Grit star wore black trousers and towering heels to her 5’8″ frame.

Steinfeld  wore her long, wavy auburn tresses damp and pinned back for the evening and a full face of makeup accentuated the Los Angeles native’s natural features.

Taking the plunge! At the event held at the Microsoft Theater in Los Angeles, the True Grit child star wore her blazer open to expose her black leather bra – and plenty of skin

Strut it: The actress/singer paired the sexy undergarment with a black blazer with ornate buttons and high jutting shoulder pads

Strike a pose: On her lower half the True Grit star wore black trousers and towering heels to her 5’8″ frame

Wet hair don’t care: Steinfeld wore her long, wavy auburn tresses damp and pinned back for the evening and a full face of makeup accentuated the Los Angeles native’s natural features

The Ender’s Game actress then performed a costume change for the live performance of Let Me Go.

Steinfeld took to the stage in a thigh skimming sequined dress and matching thigh high boots, under which she wore fishnet stockings.

The star of the upcoming a Capella sequel Pitch Perfect 3 crooned into a sequined microphone for the performance.  

Shine on: Later on in the night the Academy Award nominated actress-turned-singer donned a sequined dress and thigh high boots for the performance of her latest single

Letting it go: The Ender’s Game actress then performed a costume change for the live performance of Let Me Go

Crowd time: Steinfeld took to the stage in a thigh skimming sequined dress and matching thigh high boots, under which she wore fishnet stockings

The star-studded event featuring some of the most famous musicians in the world took place at the Microsoft Theater in downtown Los Angeles and were aired live on ABC.  

Bruno Mars led the nominations with eight, followed by Ed Sheeran, Drake, Kendrick Lamar, The Chainsmokers and The Weeknd, who each have five nominations. 

But the most interesting category is Best Female Pop/Rock artist with Rihanna and Lady Gaga going head-to-head with newcomer Alessia Cara. 

Bloody hell: Justin Bieber’s on again off again girlfriend Selena Gomez, 25, also performed at the AMAs

Creep show: The Revival artist performed with creepy set design, including a seemingly abandoned car 

Artist Of The Year was dominated by men with not one woman listed.

The nominees are Bruno Mars, The Chainsmokers, Drake, Kendrick Lamar and Ed Sheeran.

Best Pop/Rock album also went to the men: Bruno Mars – 24K Magic, Drake –More Life, and The Weeknd – Starboy.

Best Pop/Rock duo went to The Chainsmokers, Coldplay and Imagine Dragons.

The Best Pop Rock song category included Luis Fonsi & Daddy Yankee ft. Justin Bieber – Despacito, Ed Sheeran – Shape of You, and The Chainsmokers ft. Halsey – Closer. 

Tour Of The Year nominees are Garth Brooks, Coldplay and U2. 

Simply complicated: Demi Lovato, 25, took to the red carpet in a bust-enhancing garment

LA Ink: The tattooed pop star also performed on Sunday night

The night will also feature many performances from the biggest artists in music including Selena Gomez, Demi Lovato, and Lady Gaga.

Pink will have her most daring performance yet as she has been seen practicing a routine while hanging off the side of a hotel building over the weekend. 

Pop veterans Christina Aguilera and Kelly Clarkson will be hitting the stage.

Black-ish actress Tracee Ellis Ross is host of the event as her legendary musician mother Diana Ross is also a featured performer.

Stiff competition: The most interesting category is Best Female Pop/Rock artist with Rihanna and Lady Gaga [pictured] going head-to-head with newcomer Alessia Cara

Selfie improvement: Gaga took to Instagram to show her preparations for her performance