Lady Gaga strips down to her bra at Mark Ronson Grammys after-party

She invited Mark Ronson to fill in for Bradley Cooper when she performed A Star Is Born hit Shallow at the Grammys on Sunday night.

And Lady Gaga, 32, kept the party going after the main event alongside the British musician, joining him at his Club Heartbreak Grammy Party, sponsored by Absolut Elyx.

The pop princess turned screen star was channeling old school Gaga in just lingerie and fishnet tights, set off with a dramatic headpiece.

Celebrating: Lady Gaga kept the party going after the Grammy Awards on Sunday night with Mark Ronson, joining him at his Club Heartbreak Grammy Party, sponsored by Absolut Elyx

Following her rather demure – by her standards – outfit on the red carpet earlier in the evening, Gaga pulled out all the stops for the after-party.

She let loose as she celebrated long into the night, opting for a far more out there look for the bash.

Gaga striped down to her black lingerie, which she teamed with a sequin jacket and bibi hat from the Celine by Hedi Slimane Spring/Summer 2019 collection.

She topped off the look with a sparkling silver choker necklace and some serious attitude.

Wow: Gaga striped down to her black lingerie, which she teamed with a sequin jacket and bibi hat from the Celine by Hedi Slimane Spring/Summer 2019 collection

Partying in style: Gaga was joined by a host of A-list guests at the bash, including filmmaker Baz Luhrmann

Taking to the decks: Gaga was letting loose alongside the British musician as he took to the DJ decks to entertain revelers

Party girl: Also in attendance was fellow singer Katy Perry, who stood out from the crowd in a rainbow hued dress with dramatic puffball sleeves

Mark was joined by a host of famous faces at his fun-filled after-party.

Also in attendance was fellow singer Katy Perry, who stood out from the crowd in a rainbow hued dress with dramatic puffball sleeves.

The off-the-shoulder number boasted bow detailing at the bust in a contrasting black satin, ballooning out at the arms.

Mark and his fellow revelers were seen dancing the night away as they sipped on cocktails and enjoyed some good tunes.

On the scene: Troye Sivan and Charli XCX also stopped off at the post-awards show party

Cheers! Guests raised a toast following a fantastic evening of music and entertainment

The main man: Mark posed alongside Tom Elmhirst and Baz Luhrmann inside his bash

Making a statement: Pop princess Charli XCX donned a loose leather shift dress with studded detailing and funky velvet platform shoes

Earlier in the evening, the star performed her hit at the Staples Center in Los Angeles.

She turned up the tempo for the ballad – which won a BAFTA earlier in the day – as she slayed the song and the stage in a bejeweled catsuit.

Daring to impress, the Born This Way Songstress gave her fans a charge as the futuristic ensemble featured a plunging design.

Superstar: Earlier in the evening, Gaga reminded us she’s a true music sensation at the Grammys on Sunday

Dazzling: She had walked the red carpet in a silver sequinned gown with a ruffle down one side, the custom Celine by Hedi Slimane dress marking one of her most demure awards show looks to date

Her flawless figure was thrust on center stage as the one-of-a-kind body suit fit her form tightly.

The song is usually performed in a reserved manner, but Gaga kicked it up a notch as she commanded the stage with kicks, hair flips, and animated faces.

She slithered up to Mark Ronson – one of the song’s co-writers – as she wailed in a guitar for the jam session.

Triple threat: The 32-year-old triple threat performed her hit Shallow from A Star Is Born at the Staples Center in Los Angeles

Slayed: And Gaga turned up the tempo for the ballad – which won a BAFTA earlier in the day – as she slayed the song and the stage in a bejeweled catsuit

Perhaps the artist’s high energy levels came from the three Grammy trophies she won before the performance.

Gaga won Song Written for Visual Media and Best Pop/Duo Performance for Shallow,’ and Best Pop Solo Performance with Joanne (Where Do You Think You’re Goin’?).

She even took home a BAFTA earlier in the day for Shallow, which Bradley Cooper scooped up at the show in London.

Impressive: Daring to impress, the Born This Way Songstress gave her fans a charge as the futuristic ensemble featured a plunging design

Slither: She slithered up to Mark Ronson – one of the song’s co-writers – as she wailed in a guitar for the jam session

The BAFTA was presented when Gaga was still getting ready to attend the Los Angeles show, with the tearful winner tweeting that ‘I’m not gonna be able to wear any makeup’.

Taking to Twitter, she gushed about her first win of the night, her trophy from the British Academy of Film and Television Arts, which was taking place in London.

‘I can’t believe we just won Best Original Music at Baftas,’ she wrote. ‘I wish so much I was there but am at the Grammy’s to show them our love as well. We made a film about music.

Flawless: Her flawless figure was thrust on center stage as the one-of-a-kind body suit fit her form tightly

‘This means the world to me. Thank u to all our fans we love u so much, we wouldn’t be here without u.’

Then just an hour later as she prepped for the Grammys, there was more good news.

She won best song written for visual media for Shallow from A Star Is Born.

Kick it up: The song is usually performed in a reserved manner, but Gaga kicked it up a notch as she commanded the stage with kicks, hair flips, and animated faces

‘I’m not gonna be able to wear any makeup tonight. We just won our first of Grammy nominations for the night. I’m in tears with honor and gratitude. Thank you @RecordingAcad #Grammys #Grammy and my co-writers and Bradley I love you so much thank you.’

And then another triumph, this time for Gaga alone, as she was named best pop solo performance for Joanne (Where Do You Think You’re Goin’?).

‘A Grammy for Joanne is more than me & my family could ever dream of. I sang that version in one take, & poured my entire life & soul into it. Thank you so much for this gift I am completely shocked. 2nd Grammy win of the night I am so overwhelmed by this kindness.’

High energy: Perhaps the artist’s high energy levels came from the three Grammy trophies she won before the performance

Accolades: Gaga won Song Written for Visual Media and Best Pop/Duo Performance for Shallow,’ and Best Pop Solo Performance with Joanne (Where Do You Think You’re Goin’?)

Gaga tied for the third-highest number of nominations this year with five, for record of the year, song of the year, best pop duo or performance, and best song written for visual media for Shallow; and best pop performance for Joanne (Where Do You Think You’re Goin’?).

She’s previously won six Grammy awards, including two in 2010, three in 2011, and one in 2015 for her collaboration album with Tony Bennett.

Other performers include Beyonce’s proteges Chloe x Halle, fresh from their performance of America The Beautiful at the Super Bowl, Dua Lipa, St. Vincent, Andra Day, Camila Cabello, Dan + Shay, Post Malone with the Red Hot Chilli Peppers, Shawn Mendes, J Balvin, Arturo Sandoval, Young Thug, Janelle Monáe, Kacey Musgraves, H.E.R., Brandi Carlile, Maren Morris, Little Big Town, Ricky Martin, Fantasia and gospel great Yolanda Adams.

Dua Lipa will be making her Grammy stage debut on the show, where she’ll be joined by St. Vincent for a special performance, while Adams will sing alongside Fantasia and Day in a tribute to late Queen of Soul Aretha Franklin.