'Skyscraper' singer Sam, who is expecting her third child with husband Craig Pearson, made the announcement on her Twitter account this morning (16 April).
Sam, 36, simply said: "Me and Craig are proud to announce we are having a little girl... A special Thankyou to @miracleprogress xxxx."
Sam and husband Craig are already parents to daughter Brooke and son Tommy.
Shortly after announcing the news, Sam joked that Tommy was hoping to have a younger brother! Sam tweeted a photo of Tommy and wrote the caption: "Tommy not so pleased that he is having a baby sister!!! Lol."
Former prison guard Sam announced her pregnancy news in March, admitting she found out she was having a third child after taking a pregnancy test in her local ASDA supermarket. Sam has since shared a scan picture of her unborn baby.
Last month, Sam asked former mentor Sharon Osbourne to be godmother to her unborn child. Sharon agreed and told Sam she was "honoured" to have been asked to play a such an important role in her child's life.
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