British pop stars Natasha Hamilton and Ritchie Neville are expecting a child together.

The Atomic Kitten star and the 5ive singer began dating in 2013 after their bands reunited on U.K. Tv series The Big Reunion, which relaunched popular acts from the 1990s and 2000s.

The pair has now announced Hamilton is pregnant, and she insists the news came as a surprise after she suffered a health setback last year (13).

She tells Britain's Ok! magazine, "I was shocked and overwhelmed - this wasn't planned! It's a complete miracle because I had cysts on my ovaries last year and the specialist had to remove them."

The tot 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.