Photo: Source: Jill Zarin/Instagram

Source: Jill Zarin/Instagram

It was girls’ night out on Friday night assoon-to-be-marriedLuann de Lessepsand 15 of her friends partied at the 51-year-old Real Housewives of New York star’s bachelorette party in Miami!

De Lesseps was all smiles, wearing a sparkly tiara that said “Bachelorette,” a fur shrug and embellished T-shirt that said “Mrs. D’Agostino” — in honor of her fiancé Tom D’Agostino, Jr.

He proposed to her in February with an eight-carat yellow-diamond ring after a few weeks of dating. Their relationship was the fodder for much drama on this season of Bravo’s hit reality show, asD’Agostino, Jr. allegedly hada “friends with benefits” relationship with HousewifeSonja Morgan—and had previously dated HousewifeRamona Singer.

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Neither Morgan nor Singer were in attendance at the Miami party. Instead, the night was filled with alums of theReal Housewivesfranchise, includingRHONY’sJill Zarin andRHOM’sAdriana de Moura andAlexia Echevarria.

All the ladies shared shots of the fun on their Instagram page. It’s the first time Echevarria has been seen out since her husband, Herman,was found deadin his apartment on Sept. 26.

After the “sumptuous” meal — which included a sparking dessert — the insider told PEOPLE the live music started.

“Everyone was up and dancing,” the source continued. ” The party ran about 5 hours and then everyone went off to some club to continue dancing.”

This isn’t the first wedding event de Lesseps has been to in the past few weeks. On Sept. 29, her friends threw hera lavish bridal showerin New York.

The happy couple will wed on New Year’s Eve in Palm Beach, Florida — and will be expecting about 250 guests (including Medley, Morgan andformer HousewifeJules Wainstein).

“I’m so in love,”de Lesseps previously gushed to PEOPLE. “I’m most excited to celebrate – to celebrate our life together and to have all our friends together.”

She was previously married to Count Alexandre de Lesseps, 66, from 1993 to 2009. The pair share two children, son Noel and daughter Victoria.

RELATED VIDEO: CountessLuann De LessepsSpills Her Wedding Deets: Dresses, Serenading, and Bachelorette Party!

“I’m excited to walk down the aisle,” de Lesseps told PEOPLE. “I’ve never done it – I eloped. So I never have been married in a traditional way so I’m excited to be a bride. That’s why I’m wearing a veil.”

Oh, and de Lessepswill wear three dresses.

“I’ve got three things to celebrate: it’s our wedding, it’s Tom’s birthday and it’s New Year’s Eve,” sheshared with PEOPLE. “So I’m feeling like I’m gonna go very traditional bride, and then party dress for Tom, and then glitz and glamour for New Year’s Eve.”

Of the bridal fashion moment, she joked, “Why wear one when you can wear three?”

source: people.com