All Saints are reforming in 2014.
The group consisting of Shaznay Lewis,Melanie Blatt, and sisters Natalie and Nicole Appleton first parted ways 12 years ago have now announced they will be supporting the Backstreet Boys on tour during their five UK dates next Spring.
The British girl band said in a statement: "We are really looking forward to performing together as guests of the Backstreet Boys on their tour. We can't wait.
"We're singing a lot of big songs like 'Never Ever' and 'Pure Shores' which will be amazing."
All Saints were one of the most popular pop groups of the 90s, scoring a string of top ten hits after rising to fame in 1997.
The quartet split in 2001 due to rumoured rifts between members, before briefly reforming in 2006.
The news comes as a surprise since Melanie had insisted back in August 2009: "All Saints are never getting back together again. I never want to sing again. I recently did the Brits with Nic and we just went round chatting to people and then got drunk. That's my goal - to get paid for chatting to people and getting drunk!"
The tour, which kicks off in the UK in Birmingham on March 6, 2014, also marks a comeback for the girls' 90s pop rivals the Backstreet Boys, who will be performing together as the original line-up for the first time in 10 years thanks to the return of Kevin Richardson.
All Saints will be supporting the Backstreet Boys on the following dates:
March 6 - Birmingham, LG Arena
April 1 - Dublin, The O2
April 3 - Glasgow, Hydro
April 4 - London, The O2
April 5 - Manchester, Phones 4u Arena
Tagged in All Saints Backstreet Boys Melanie Blatt