The 23 year old, who married rocker Thomas Cohen last September and is six months pregnant with her second son, has told pals she’s never felt better about her body.
A source close to the star, who announced she was expecting just months after having her first child, says:
'Peaches is thrilled with her pregnancy figure and says she looks better than ever, telling her pals: "I’ve never felt more confident about my body!" Tom thinks she’s at her sexiest while pregnant and can’t stop telling her how beautiful she is.'
Peaches and Tom, 21, were enjoying a romantic holiday in Mauritius, having postponed their honeymoon to care for son Astala, who’s now nine months old.
The once-curvy star – who dropped from a size 12 to an 8 in 2011 after cutting out junk food – looked happy and carefree as she frolicked with her husband in the sea.
The insider reveals: 'Just before she fell pregnant with Astala, Peaches had a super-healthy diet. She’d lost a lot of weight by ditching junk food, cutting out carbs at night and sticking to fresh fruit, veg, grilled chicken and fish.
'But when she’s pregnant she eats what she wants and says she doesn’t care about fat content or carbs. She’s eating lots of pasta, toast, eggs and veg – and loves pizza and burgers too.
'The only thing she avoids is sugar as she says it’s not good for the baby.'
The source adds: 'She eats loads, but has a slightly overactive thyroid so finds it hard to put on weight anyway. She says she’s one of those lucky women who just don’t put on much weight when they have their babies.'
In the run-up to her wedding last year, Peaches, who remained slim throughout her first pregnancy, sparked concern among friends and family after dropping a dress size to a 6 in just a few weeks.
Her skinny frame was in stark contrast to the curvy figure that she revealed when snapped at a water park in California in 2010.
The source adds: 'She doesn’t take criticism that she’s too slim to heart. She loves her toned arms and legs.'
'She’s always said she’s not a fan of working out in the gym, but says she keeps fit running after Astala and going for long walks with him and their Labrador Parpy.'
A source adds: 'Peaches has said she’s loved every stage of this pregnancy. She’s pleased her body is in the best shape of her life, as she knows it’s going to be hard work running after two kids.'