A former television star, now serving as a diplomat, captivated onlookers at a bustling nightclub Sunday night, turning heads in a shimmering silver gown. She accessorized her ensemble with a $7,000 Valentino handbag, coordinating stilettos, and a striking diamond cross necklace.

Emerging alongside her son Ronan shortly after 10 p.m., Guilfoyle greeted the press with a friendly wave and smile. Draped in a luxurious fur jacket, she paused for photographs before making her way inside.

Seated prominently at a front-row table, the ambassador was warmly acknowledged by pop icon Konstantinos Argyros, who entertained the crowd with his chart-topping tracks.

Sharing the table with her was billionaire Eric Vassilatos, who had flown her to Greece earlier that week on his private jet. They were joined by a few others from her close-knit circle.

During the evening, a fellow partygoer invited Guilfoyle to the dance floor. She obliged for a brief moment, then later eagerly participated in traditional Greek dances like the Syrtaki and Kalamatiano, linking arms with other guests.

This glamorous night followed a larger gathering at the Grand Hyatt, which attracted over 300 attendees.

By contrast, Sunday’s celebration at the Athens Center was an intimate affair of around 150, attended by several leading figures from Greece’s business and political circles, including Tourism Minister Olga Kefalogianni.

Taking to the stage, Guilfoyle kept her message simple: ‘I will not disappoint you.’

Once seated at her front-row table, the ambassador was personally welcomed by pop sensation Konstantinos Argyros, who serenaded the crowd with his biggest hits

Sharing her table was billionaire Eric Vassilatos, whose private jet had whisked her to Greece earlier in the week, along with a few more people among her inner circle

Touching down in the heart of Athens over the weekend, America’s new ambassador to Greece , Kimberly Guilfoyle, wasted no time with her debut

At one point, a fellow guest invited Guilfoyle onto the dance floor — she obliged briefly before returning to her seat, later joining in enthusiastically on the traditional Greek Syrtaki and Kalamatiano dances, linking arms with guests in a circle to dance

The high-octane debut, packed with photo ops and VIP appearances, hasn’t gone unnoticed in Washington or among seasoned members of the foreign service community

The new US ambassador to Greece, Kimberly Guilfoyle, marked the start of her diplomatic posting with a music night in downtown Athens on Sunday, hosted by Greek pop star Konstantinos Argiros

Sharing her table was billionaire Eric Vassilatos, whose private jet had whisked her to Greece earlier in the week, along with a few more people among her inner circle

Kimberly Guilfoyle Official Welcome Party in Athens at Kentro Athinon

But behind the glamour, her whirlwind start has already stirred murmurs in diplomatic circles. Before officially presenting her credentials to Greece’s president — a required step before assuming her ambassadorial duties — Guilfoyle had already plunged into a full social calendar of receptions and late-night gatherings, many coordinated through the US Embassy’s own channels.

The high-octane debut, packed with photo ops and VIP appearances, hasn’t gone unnoticed in Washington or among seasoned members of the foreign service community.

The ambassador’s busy weekend included an appearance at a 250th anniversary celebration of the US Marine Corps on Saturday night at a central Athens hotel.

Guilfoyle is set to be formally received by President Konstantinos Tasoulas at the Presidential Palace on Tuesday, officially marking the start of her tenure.

Later in the week, she’ll attend the 6th Transatlantic Energy Cooperation Conference (P-TEC), alongside US Energy Secretary Chris Wright, Interior Secretary Doug Bergham, and more than 20 European energy ministers — marking her first official appearance at an international forum since taking office.