Amanda, who is currently on holiday with her family, couldn't resist sharing a number of holiday pictures with her 570k followers on Instagram - and the images sent her followers into a tizz, as they praised her age-defying physique.
In one photo, the TV personality stripped off her bikini top for a casual reading shot.
Amanda is seen topless by the poolside in the shot, taken from behind.
Showing off her toned physique perfectly, with just a hat for protection, the BGT judge told fans that she had enjoyed some 'mamatime'.
Another snap was taken of the mum-of-two in a retro Coca Cola-branded swimming costume, from Primark, as she spent time rubbing sun cream into her daughter's arms ahead of a day in the sun.
One fan asked the 46-year old what she did to stay in shape, and the star credited 'running and swimming and a bit of yoga' to keeping her figure in check - though, she went on to share with her Instagram followers that 'To be honest when I'm on holiday I don't do any of that!'
Amanda went on to detail: 'I try not to eat carbs after six. And I always put a teaspoon of coconut oil in my coffee every morning as I've heard caffeine grabs on to that part of your waist. Apparently coconut oil stops that.'
One user commented: 'you look bloody gorgeous', whilst another, more animated fan said: 'Shut the front door! Wow Mrs, what a bod!!! I've just pressed my golden buzzer ❤️'
A third agreed: 'EXTREME BODY GOALS. My flawless Queen ❤️'
'Wow! You are stunning' one fan exclaimed, while another noted: 'a perfect woman.'
'Seriously you are like a fine wine.... getting better with age!'
Amanda has been married to her husband Chris Hughes, 43, since 2008 and they have two children - daughters Alexa, 11, and five-year old Hollie.
What do you think of the star's holiday bod? Let us know in the comments box below.