The singer is expecting a baby with Ritchie Neville of British boyband 5ive, and her Atomic Kitten co-star Liz MCClarnon has now revealed Hamilton's due date is just weeks before the band kicks off a joint trek with acts including All Saints and East 17.
However, MCClarnon is convinced her friend up for the challenge, saying, "She's good and she's showing quite a lot. She is due a month before the tour starts, but she is determined and totally up for it so it will be fine. She does know what to expect. If it was me I'd need three years off."
The baby will be Hamilton's fourth child. She has a son with her estranged husband Riad Erraji and two other boys from previous relationships. It will be Neville's first child.
The Another Time Another Place tour kicks off in Cardiff, Wales on 14 November (14).