Sugababe Heidi Range has wished her ex-bandmates Keisha Buchanan and Mutya Buena luck in reforming their original band.
Former Sugababes Keisha, Mutya and Siobhan are set to reform as a band entitled Mutya Keisha Siobhan.
Heidi, who replaced Siobhan in 2001, wished the girls "good luck".
She said: "I think good luck to them. I saw the girls at V Festival a few weeks back and said hello and wished them all the luck. I've not heard any of the songs yet but I'm sure they'll be great.
"The three of them are brilliant singers, so I'm looking forward to hearing the songs."
Heidi and her bandmates Amelle Berrabah plus Eurovision star Jade Ewen haved retained the Sugababes bandname, but the star insists that there is no rivalry between the groups.
She said: "There have been enough line-up changes and stuff that I think it doesn't make any difference now."
The Sugababes have taken a break to work on solo projects. Heidi, however, has assured fans that they are not over.
The singer said: We've not actually split, we kind of want to take time out and do our own thing."
"I've been in talks with a few different TV projects at the moment, in talks about some West End stuff. I'm kind of keeping my options open but it's nice and exciting to be looking at different things.
"It is nice not living out of a suitcase but I love being in Sugababes, it's such an amazing job and I'm so lucky that we've had 11 years so far. But it is nice to not be packing suitcases every two minutes and have a normal routine."
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