She tied the knot to rocker Jamie Hince in 2011 and has made no secret of the fact that she would like a little brother or sister for her daughter, Lila.
But Kate Moss will no doubt set tongues wagging as to whether she is expecting another child after sporting a rounder tum while holidaying in St Barts on Tuesday.
The 38-year-old supermodel seemed to have a much curvier middle than usual, with the tiniest hit of a bump visible as she turned to the side.
And whether it was the picturesque Caribbean surroundings or the warm weather, there was no doubt the Croydon-born beauty was positively glowing as she soaked up the sun with her man.
Seeming more in love than ever, the pair put on an extremely amorous display as they enjoyed a spot of alone time together.
The couple looked as though they were having a blast as they chatted away and giggled at each other.
But playful Kate soon took things a step further, grabbing her beau by the shoulders and straddling him as she pushed him to the ground.
Kissing The Kills rocker passionately, Kate showered Jamie with affection before fully smothering him with her body.
And Jamie certainly responded with the desired enthusiasm, grabbing his wife’s toned bottom as they kissed and cuddled for all to see.
After their extremely amorous display, the loved-up couple took themselves off to the sea, cooling off as the ocean waves hit them.
Kate bowed down as she let the cool water hit her, before standing up to reveal her supermodel figure in all its glory in a tiny maroon and black bandeau bikini.
Although the mother-of-one cut a stylish figure as she lapped up the waves, Jamie made sure to play the fool, appearing to fall over as they paddled to the sea.
But Kate’s cool and calm exterior didn’t last for long.
Despite being one of the world’s most beautiful women, with a career as a supermodel that has earned her an estimated £48 million, Kate put on a distinctly less than elegant display as she struggled to clamber aboard a dinghy.
The beauty found it hard to maintain her dignity as she was yanked on board the boat legs-akimbo by her beau.
A far cry from the chic and sophisticated fashionista we are used to seeing grace the world’s catwalks, Kate practically nose-dived on board while her legs flailed out at all angles behind her.
While the star no doubt found the whole incident a little mortifying to say the least, Jamie seemed particularly tickled at his wife’s uncharacteristically clumsy display, with The Kills rocker failing to suppress his giggles as she finally made it into the dinghy.
The couple were then transported to a luxury yacht, where Kate resumed her usual glamorous stance as the pair soaked up the son on board with a group of pals.
Taking in their stunning surroundings, the group seemed to be having a whale of a time as they kicked back and relaxed following a busy few days for the model, who has been working on a number of shoots in the exotic location.
It would seem Jamie was suffering with the effects of the hot Caribbean sun, as he later covered up after showing a hint of sunburn.
Although keeping the harsh rays off his pale skin was undoubtedly a sensible choice, the star looked mildly ridiculous in a white floral shirt and totally unnecessary black scarf as he chatted away on a mobile phone – in the middle of the sea.
And while the couple may have thought they’d kept their amorous display relatively secret, they would have no doubt been tickled to see a completely naked man next to them as they emerged from their beach romp.
Kate has been living it up in the Caribbean over the past few days under the pretext of work, posing up a storm in a series of sexy photoshoots.
The couple tied the knot in July 2011, and Kate has made no secret of her desire to have more children.
She told German magazine Gala prior to her nuptials: ‘First of all I am going to get married… and maybe more kids. Who knows what the future will bring? My career is OK… so far.
‘When I gave birth to Lila, after I did it I was just thinking, “Yeah! I really made it!” .
Lila, 10, is Kate’s daughter with former partner Jefferson Hack.
A representative for Kate Moss has been contacted by MailOnline.
A tale of two tanners: Kate topped up her tan in her tiny bikini, while Jamie covered up his pale skin in a white floral shirt