Break The Internet UK, Fifth Harmony!

Two years ago, five talented mini-divas came together as LYLAS, and then 1432, and then Fifth Harmony, on X Factor USA.

It’s only fitting, then, that the troupe would make their television debut across the pond on X Factor UK, once again standing in front of their ol’ BFF, Simon Cowell. Oh, and Cheryl Tweedy Cole Fernandez-Versini and Mel B, two members of two of the greatest girl groups of all time. No pressure at all. That’s fine.

Luckily, their UK debut was a smash success — and maybe one of their best performances yet.

Thanks to X Factor UK‘s usual brand of over-the-top, larger-than-life stage dramatics, the girls’ entrance was nothing less than epic: A silhouette intro! Oh, god. The sheer excitement. Seriously, you’ll never wrong with that, from the iconic 2007 Spice Girls reunion tour intro to S Club 7‘s iconic-for-different-reasons reunion performance this year.

From there, the girls worked it out to their #SomethingMoreUrban bop “BO$$,” which, y’know, isn’t quite as good as their current US single “Sledgehammer,” but it did allow them to show off plenty of their fun ‘n #sassy personality. They all looked and sounded fantastic, but Normani stole the show — that is, until Ally death dropped and launched into her huge, back-bending final note. YAS, mama.

The dancing, hair flipping and all-around girl group-ing has mightily improved, too: ‘Twas a thoroughly tight production, from the stair strutting to the leg-crossing chair routines. In fact, it all basically resembled a performance from Burlesque — a compliment, not shade!

You’re winning, little ladies. Now let the mighty slaydgehammer fall.

‘Reflection’ will be released in January. (iTunes)