Shocked fans tell Coronation Street's Tina O'Brien 'you only look 25' as she shares birthday party videos

Fans expressed their shock on social media as Coronation Street's Tina O'Brien announced her age. The soap star shared videos on Instagram today (Wednesday) of her dancing at her 40th birthday party, with the message 'Hello 40.'

But her followers say they are stunned that Tina has reached the milestone age, telling her she looks more like 25. The soap star turned 40 on Monday, August 7. And the actress as already shared a number of posts to social media as she met up with some of her gal pals to celebrate her upcoming milestone birthday.

Her most recent videos show Tina enjoying her birthday party, dancing around in a stunning mirror and mosaic effect dress. She danced on her own before being joined on the dance floor by some of her guests.

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Fans have been in disbelief previously over the star's age. And her followers were quick to react to her new posts, commenting on how old they actually think she looks.

Instagram user Ben Biggs said: "40? More like 25." And Connor Goeldner wrote: "How are you 40. Still look 20 years younger. Happy Birthday Tina."

Another Tina Instagram follower, Dave Redfern Ward, commented: "You still look as if you’re in your twenties, Tina! Happy 40s X"

And Nicola Jayne said: "How!?!? Need your secrets you never age." Another user wrote: "40..........? My foot you look about 24. While a further fan said: "That can't be right - you haven't even turned 30 yet surely?!?"

Tina, who plays Sarah Barlow - nee Platt - in the ITV soap, took to Instagram recently with some of her own snaps as well as resharing some posts from her friends as they got together to enjoy a 'bring a board night' - a trend