Little Mix's Jade Thirlwall & Leigh-Anne Pinnock Remember Winning 'X Factor' Four Years Ago

Little Mix go sheer on stage in coordinated black outfits for their performance at Key 103′s Christmas Live at Manchester Arena on Friday night (December 11) in Manchester, England.

The girls — Perrie Edwards, Jade Thirlwall, Leigh-Anne Pinnock, and Jesy Nelson — heated up the stage before Jade and Leigh-Anne took to Instagram to remember winning X Factor.

“4 years ago today our lives changed forever and I met my 3 soul sisters.. I love you all more than you’ll ever know!” Leigh-Anne shared.

Jade added, “Four years ago today everything changed ?? third time lucky winning the X Factor and finding my three sisters ?? the best four years of my life. Thank you to everyone who has supported us and got us this far.”

30+ pics inside of Little Mix…