We image the likes of Tom Fletcher having oh-so cool birthday bashes involving a chic nightclub, bottles of champagne and vodka, and an after-party in a five-star hotel suite.
But nope – it seems when the dad-of-two marked his 31st bday over the weekend, he did so in a spectacularly low-key fashion.
Indeed, and as revealed on Instagram, the celebrations looked delightfully worlds away from his celebrity status.
Standing with his two-year-old son Buzz hanging from his t-shirt (major swoon all the same), Tom can be seen holding up a balloon in his left hand, and a home-made card in his right.
In the background, the glorious weekend mayhem of family-life is in clear view: oodles of coloured toys, puzzles and games and are strewn around the vicinity.
Better still, Mr Fletcher reveals in the accompanying caption that his birthday 'presents' included "a poop on the living room floor and a pee on the bathroom floor".
Still, his loyal fans didn't seem to mind – the Instagram snap was soon flooded with hearty best wishes and birthday congratulations.
As well as toddler Buzz, Tom and his wife of four years, Giovanna, have a five-month old son, Buddy.
Yesterday, the musician added a further snap of Buzz to his Instagram page. The touching black-and-white snap shows the child playing with a toy car. "Love watching my boy use his imagination," he wrote.
And this morning, Mr Fletcher revealed that he and his eldest son had on complementing footwear.
Me and Buzz are having a shoe-off," he wrote alongside a snap showing the elder Fletcher in Mickey Mouse slip-ons, and the little boy in corresponding Super Mario runners.