Nicole Scherzinger has confirmed that the group are getting back together nine years after breaking up.
The group split in 2010 amid reports of tensions between the six members and resentment over Scherzinger's leading role.
But the Dolls' figurehead says they have "grown so much" since the split.
She told The Sun: "First of all, I hope it's different because WE are different. It is 10 years on now. We all bring our own unique gifts to the group.
"I am so excited and we have grown so much. We are here to see each other shine. I think we are going to push each other."
Hits such as Don't Cha and Buttons have helped them sell more than 54 million records.
The reformed line-up will be: Scherzinger, 41, Ashley Roberts, 38, Kimberly Wyatt, 37, Carmit Bachar, 45, and Jessica Sutta, 37.
Melody Thornton is not returning but the group says the door is open for her in the future.
Scherzinger says she believes her battle with bulimia contributed to the tensions in the group because she didn't feel able to tell them about it.
"I hid it from the world," she told The Sun.
"I was extremely ashamed. When you're battling your own demons and insecurities, it's not something you want to share with other people.
"I am just so grateful I could come out of that. It's our flaws that connect us."
They group will start their reunion with a greatest hits performance on Saturday's The X Factor: Celebrity final, before touring next year.
Scherzinger said they had been working on new music but there are no plans to release it yet.
© Sky News 2019