Alex took to social media on Friday to share her very happy news, posting on both Twitter and Instagram to announce her pregnancy.
Alex and Charlie will be expecting their baby in the new year and made the announcement by posting an image of a cute baby grow with the words 'Coming Soon' printed on the front.
She wrote, 'Charlie and I are very happy to confirm that we're expecting a little baby in the new year. Absolutely delighted and feel very lucky that we're about to become parents.'
Charlie & I are very happy to confirm that we're expecting a baby in the new year. Feel so lucky that we're about to become parents. Xx— Alex Jones (@MissAlexjones) September 2, 2016
Alex couldn't wait to share the news, and once the announcement had been made the 39-year-old star shared more details of her morning sickness - or lack there of - while presenting.
Joking about hiding her bump, Alex said while hosting The One Show, 'Lots of you had guessed – I'd been trying to breathe in, but now the secret's out I can relax. And breathe out!'
Alex and husband Charlie
She happily told viewers that morning sickness wasn't effecting her so far and how wonderful being pregnant felt, 'I've had no sickness and no tiredness. I feel great'.
Since sharing the news Alex has been overwhelmed by love and support from fans. She tweeted on Saturday thanking followers for all their kind words, writing, 'Overwhelmed by all your messages of congratulations and love. Such a warm feeling. A huge thank you from us both. Diolch. On cloud 9! Xx'.
Overwhelmed by all your messages of congratulations and love. Such a warm feeling. A huge thank you from us both. Diolch. On cloud 9! Xx— Alex Jones (@MissAlexjones) September 3, 2016
Fans have been over the moon for Alex, liking her baby announcement tweet nearly five thousand times and sharing messages such as, 'Congratulations Alex, you will be an amazing mother' and 'Oh my goodness, amazing news! Much happiness for the months ahead and the joy of meeting your little one in the new year'.
The lovely announcement comes after Alex filmed a documentary on fertility, revealing her worries that she left having children until too late in life, particularly after discovering that her mum went through the menopause at the age of 43.
She said: 'That was a shock and nonetheless I have a five year window potentially to get this done.
'As most girls I spent all of my teenage years, twenties, thirties, doing everything I could to avoid getting pregnant and then... a day arrives and then you go "gosh, maybe we should have a baby".'