Sonja Morgan hit the red carpet for the DailyMail.com Seriously Scary Halloween Masquerade Party on Thursday night at The Heath at the McKittrick Hotel where she spoke about her recent off-Broadway debut, her fashion line Sonja Morgan New York and Housewives.

The lovely Ms. Morgan, who wowed in a sheer and embroidered dress, revealed to DailyMail.com that while she was invited to Luann de Lesseps' New Year's Eve wedding in Palm Beach, she will not be able to attend.

The Real Housewives of New York star explained that she has already booked a trip to Phuket with her daughter Quinn, who will be home from boarding school at the time.

She added that the two go away every year at that time and her time with her daughter is always what is most important to her.

Morgan had a relationship with de Lesseps' fiance Thomas D'Agostino, Jr. before the couple got engaged.

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Sonja Morgan attended the DailyMail.com Seriously Scary Halloween Masquerade Party on Thursday night at The Heath at the McKittrick Hotel

The Real Housewives of New York star revealed she will not be attending LuAnn de Lesseps' New Year's Eve wedding

Morgan also said that her fashion line is doing well and spoke about her recent five-week run in the off-Broadway show Sex Tips for Straight Woman From a Gay Man.

She said that she loved interacting with he audience during each performance, adding that it was great to be acting again after starring in a number of commercials.

It was not all fun for Morgan though, as she was also tasked with hosting and judging the evening's costume contest.

That 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.

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.

Morgan also spoke about her recent three-week run in the off-Broadway show Sex Tips for Straight Woman for a Gay Man

Morgan had a relationship with de Lesseps' fiance Thomas D'Agostino, Jr. (above) before the couple got engaged

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.

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.