It looks like the British royals of York decided to briefly invade Brooklyn on Monday, December 16th. Princess Beatrice and Princess Eugenie attended the 8th annual charity: ball Gala at the Duggal Greenhouse in New York City.

According to Us Weekly, Beatrice who was visiting her younger sister brought along boyfriend Dave Clark for the trip.

For the event the 25-year-old recycled a long-sleeved forest green Jonathan Saunders dress while her 23-year-old sibling sported a black dress with a laced, sleeved overlay. Bringing the look to life the royal rocked bold red lipstick as she partied solo alongside her sister and Clark.

A source revealed that while at the party, "They had friends at the event and were socializing with a drink in hand," adding, "Beatrice also had her boyfriend on her arm throughout the evening."

An insider told the publication that Prince Andrew and Sarah Ferguson's two children both appeared "as though they were just out to enjoy themselves and support the cause."

Princess Eugenie who is now a Manhattan resident and is working at art auction site Paddle8 has been channeling her inner New Yorker.

Apparently Prince Harry's cousin who he can thank for introducing him to his girlfriend Cressida Bonas walks to work on a daily basis and just last weekend was spotted courtside at the Knicks game in Madison Square Garden with "Gossip Girl" actress Michelle Trachtenberg.

To check out photos of Princess Eugenie, Princess Beatrice and Dave Clark click HERE.