Lady Gaga shared a photo on Sunday of a friend's bachelorette party that featured four male strippers

Lady Gaga looked like she had the time of her life cavorting with male strippers at her best friend's bachelorette party.

The 28-year-old basked in the debauchery in a New York City hotel among her closest schoolmates from her time attending an all-girls Catholic high school.

The bender continued through early morning hours when she broke her diet and tucked into a slice of pizza.

Bad girls: Lady Gaga shared a photo on Sunday of a friend's bachelorette party that featured four male strippers and her best friends from Catholic school

The Cheek To Cheek singer wore a clingy spaghetti strap satin dress and completed the party look with a generous amount of makeup, including a glossy pink lip, smokey eye shadow and wing-tipped eye liner.

Adding to the fun, she wore a platinum wig and bridal veil. 

The Grammy winner shared a photo of the festivities with her fans on Instagram, showing her with the bridal party surrounded by four glistening muscular male strippers who were clad in G-strings.

Munchies: The 28-year-old pop star said she regretted tucking into a slice of pizza following a booze-fueled night with strippers

'Lord help the parents of Catholic school girls. We were bad in highschool and were bad now. #ArisBacheloretteWeekend #WhiteGirlWastedNYC' she captioned the snap. 

The shenanigans stirred up an appetite for Born This Way songbird, who told her social media followers that she was so intoxicated that she went against her better judgement and indulged in a late-night junk food binge. 

'I'm mostly devastated by this photo I discovered on my cellphone taken at 5 am. PIZZA IS NOT A PART OF MY NEW DIET,' she captioned a picture that shows her striking an alluring pose with her food.

She added: 'Sorry @sloaner7 I blacked out I don't remember w thing!'

Bedside manners: The entertainer posed with a doll while suffering a hangover on Sunday morning

However, she should not fear for her waistline, as she burned calories a day earlier while performing a flesh-baring dance routine for the ladies on a stripper pole.

And all of the weekend-long hard partying did not leave her looking worse for the wear on Sunday morning.

The hitmaker shared a photo of herself clinging to a blowup sex toy doll while in bed.  

'Even with all the strippers for the bride, us bridesmaids made sure Billy The Groom got some last night,' she joked of the groom, who is also a longtime friend. 'Don't worry we used protection!'  

Advice: The Born This Way hitmaker suggested to her fans that they keep the party in their hotel suite 'so when you wake up your still at the party' [sic]

The native New Yorker enjoyed the sendoff for Ari, her best friend of more than 20 years, along with their Convent Of The Sacred Heart high school friends. 

The ladies gathered at a hotel in the Big Apple for the booze-fueled celebration that began on Friday. 

After the party concluded on Sunday, she shared images of the hotel suite cluttered with empty champagne and wine bottles, pink kitsch, balloons, phallic toys and a banner with the words: 'Cheers, b*****s.'

Farewell: Lady Gaga zipped off in her car and said she will be drinking healthy green juice

The Do What U Want singer told her fans that she was pleased that they did not have to leave their plush digs for most of the soiree. 

'Suggestion: have your BESTIES Bach party at the hotel your staying at so when you wake up your still at the party,' she wrote.  

The showgirl shared her final photos with her fans as she zipped off in a car, explaining that she is suffering a hangover and plans to hit the gym.

Naughty times: The singer did not appear exhausted after a weekend of partying for her friend of 20 years

'A New York hangover is the best there is! Time for a green juice and an a** kicking. I still think health drinks taste like feet.

'Thank you Sara and Freddy for keeping my makeup and hair fresh even when I wake up still drunk!'

She wore a fuzzy black coat that resembled hair and teamed the look with black heels, cheetah-print cat-eye sunglasses and a black leather purse.

The knockout had her toned legs on full show as she entered Bikram Yoga Lower East Side to participate in a yoga class.

Working it out: After a weekend drinking bender to celebrate her best friend's bachelorette party, Lady Gaga went straight to a yoga class on Sunday

Fine feline: She wore cheetah-print cat-eye sunglasses and a black dress that resembled hair

Back to business: The entertainer is promoting a new song for the documentary The Hunting Ground, which premiered at Sundance Film Festival in Park City, Utah on Friday

Health kick: She told her Instagram fans it was time to drink green smoothies and hit the gym

The girlfriend of actor Taylor Kinney displayed her impressive physique while performing yoga postures in the heated studio.

She wore a black sports bra and matching bikini during her session with instructor Tricia Donegan.

'Time to tell last nights pizza whose boss,' she wrote in the caption of a photo shared on her Instagram page.  

Burning it off: Lady Gaga participated in a heated yoga class at Bikram Yoga Lower East Side following her indulgent weekend

Impressive: She wore a black sports bra and matching bikini during her session with instructor Tricia Donegan

Meanwhile, it is back to business as usual for the entertainer, who recorded a song with Diane Warren for the documentary The Hunting Ground, which premiered at Sundance Film Festival in Park City, Utah on Friday. 

'The film documents the lives of young people affected by rape. Our song is called Till It Happens To You. Till It happens to you, you don't know how it feels' she tweeted.