Kesha, New York Housewives Sonja Morgan and Dorinda Medley and more turn up for DailyMail.com Halloween bash 

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It was a cold and rainy evening in New York City on Thursday, but the A-list crowd at the DailyMail.com Seriously Scary Halloween Masquerade Party at The Heath at The McKittrick Hotel kept things hot all night long. 

Guests at the party on Thursday were treated to a special set from Kesha and her band The Creepies, with the singer performing some of her classic hits including TiK ToK, Die Young, Timber, Blow and We R Who We R.

Also on hand was Real Housewives of New York City star Sonja Morgan who judged the evening's costume contest, fresh off a three-week run performing in the Off-Broadway play Sex Tips for Straight Woman for a Gay Man.

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Kesha in the red carpet at the DailyMail.com Seriously Scary Halloween Masquerade Party

The 29-year-old singer provided entertainment for guests at the event

Real Housewives of New York star Sonja Morgan on the red carpet

Real Housewives star Dorinda Medley with her longtime boyfriend John Mahdessian

The Fat Jew attended dressed as Rob Kardashian and Blac Chyna's baby 

His outfit was complete by an adult diaper

Others showing off their seriously scary looks at the event included Real Housewives star Dorinda Medley and her longtime boyfriend John Mahdessian, Rich Kids of Beverly Hills cast member Bianca Espada, television personality Alicia Quarles, models Louisa Warwick and Rose Smith, and DJ Xenia Ghali. 

The Fat Jew stood out from the crowd with a costume that consisted of a diaper, silk polka-dot bib, oversized pacifier and a blond wig under a Los Angeles Dodgers hat.

'I'm Rob Kardashian and Blac Chyna's baby,' he told DailyMail.com. 

Makeup artists were also on hand throughout the evening to give guests touch-ups or a custom spooktacular look thanks to Rouge New York, the New York City makeup salon opened in 2013 by Law & Order star Stephanie March and artist Rebecca Perkins.

The ladies, who opened their first salon in Soho, recently started catering to their uptown clients with a new salon on the Upper East Side. 

Television personality Alicia Quarles (left) and model and singer Sam Way (right) 

Sonja Morgan (second left) and DailyMail.com Chief Revenue Officer Alicia Muntzner (right) takes some time to pose with festive friends on the red carpet

Models Louisa Warwick (left) and Rose Smith (right) in the red carpet

The costume contest was won by Ralph Conserva who works at Essence Digital on Team Arrow and his girlfriend Caroline Maté, an aspiring design strategist (above)

Meanwhile, the costume contest was won by Ralph Conserva who works at Essence Digital on Team Arrow and his girlfriend Caroline Maté, an aspiring design strategist.

The couple walked away with a two-night stay at the Loews Regency New York Hotel, located in the city's chic Upper East Side neighborhood, as well as breakfast for two in The Regency Bar & Grill. 

Prior to the performance, Kesha spoke with DailyMail.com about her recent tour, Halloween plans and the importance of voting in the upcoming presidential election.

'Use your voice. Your voice, on November 8th, is voting. It's exciting and something you have waited 18 or more years for, so assert your power!' said Kesha.

Guests at the event could have their makeup done by the professionals from Rogue New York

Rogue New York is the New York City makeup salon opened in 2013 by Law & Order star Stephanie March and artist Rebecca Perkins

The ladies, who opened their first salon in Soho, recently started catering to their uptown clients with a new salon on the Upper East Side

Costumed guests gather at the bar during the event on Thursday night

On a more festive note, Kesha shared her Halloween costume plans just days ahead of the big night.

'I think I'm going to be a UFO or an alien because they exist and I love them and I'm pretty sure I'm from another galaxy anyways,' she said, adding that last year she went as a psychedelic rainbow.

'I love rainbows. They signify hope for me,' said Kesha.

Kesha also spoke about getting back out on tour recently, and detailed what a day in her life is like as she travels from city to city.

'I usually either go on an incognito exploration of whatever interesting vintage shopping, record shopping, or outdoor adventure is near,' she said.

'I like to force my band to bond with me doing water activities or biking, which they don't usually love, but one day they will look back and be happy I forced them to canoe with me....maybe.'

A baby blue unicorn enjoys some tarot card reading during the event

Candy was all around for hungry guests at the event

Then it is a few hours of sound check followed by Kesha's pre-show ritual.

'I meditate and/or watch 70s scary movies or watch my live feed of my cats at home.' said the singer.

After the show she said that she is usually 'bleeding or crying or drinking or having sing-alongs on the bus' before heading to bed.

The bottom bunk on the bus she said is her 'lucky bunk' and where she prefers to sleep while on the road.