The 'X-factor'-judge termed the idea really cool and said it is possible to reunite with them in the future, reported Contactmusic.
"I love the girls, I miss them, I wish them the best. I don't see why it wouldn't be possible sometime in the future," the 34-year-old said.
Talking about her upcoming music records she said, "Right now I'm really excited for all the hard work I put into my music to get that out."