Plans for a reunion were put in doubt after Dappy was found guilty of affray and assault after spitting on a man during an argument.
However, Contostavlos has reaffirmed that she will still reform with Dappy and third member Fazer, although they have yet to discuss the timing.
"Nothing's changed," she told BBC Newsbeat. "It's just a case of when and we don't have a time on it yet."
Dappy is scheduled to be sentenced with two other men on February 15.
Meanwhile, Contostavlos will support Ne-Yo's upcoming UK arena tour, which starts on March 6.
"I've heard so much about him and what a great guy he is and an amazing talent. I'm really excited about being back in arenas again," she said of the jaunt.
"The way that it came about is that we have the same agency and it was just an idea that they came up with and approached me and asked me if I'd like to do it.
"We approached him and asked him if he'd be up for it and he was."
Watch the music video for Tulisa Contostavlos's debut hit 'Young' below: