The Saturdays Invite Sean Paul To Their Sold-Out NYC Show

U.K. girl group started a dance party at Highline Ballroom ahead of their reality-show debut this weekend.

NEW YORK — In case you haven't heard, girl power is officially back. Need proof? Check out the Saturdays, a U.K. girl group is reviving the girl-group movement one anthem at a time.

The fashionable fivesome played to a sold-out crowd Thursday night at the Highline Ballroom and kept the party going as they stormed their way through a set that showed off their sassy dance moves, skintight sparkly outfits and penchant for killer dance beats.

While the Saturdays are still foreign to most American music fans, they are already certifiable stars back in their native U.K. And as they prepare for their U.S. invasion, it seems they already have a number of supporters, who sang along to every song during the intimate gig.

"Hello New York! I have a question: Are you guys here to party?" Mollie King asked the hyped room before they launched into their next track, "Ego."

"This is so weird to be in America," Frankie Sandford noted before Rochelle Humes added, "This is the biggest show that we've done here."

Sure the show was all about big dance numbers like "30 Days," "Up" and "Forever is Over," but the ladies also showed off their musicianship, slowing it down and going unplugged for "Issues" and "Chasing Lights." Una Healy and King both brought out their guitars, allowing the group to demonstrate their vocal prowess and range.

The Saturdays are psyched for the Destiny's Child reunion!

Overall, the show was loose and fun, their organic chit-chat and banter making the audience feel like they already knew the ladies. After slowing it down, they picked up the pace again for "Get Set" and "All Fired Up" as the crowd went wild.

One day prior to the show, they stopped by MTV News teasing they'd have a surprise for everyone, and they didn't disappoint. The girls were joined by Sean Paul for "What About Us," a track poised to be the girls' big American single.

While it seemed like the epic dance single would be the last song of the night, the ladies had one more surprise as they once again graced the stage for "Higher," much to the delight of the room.

For anyone who missed the show, they can get to know the Saturdays better this Sunday when they launch their E! reality show, "Chasing the Saturdays." They will also release an EP of the same name on January 29, featuring their lead U.S. single, "What About Us," as well as songs previously only released back in Europe.