Brazilian beauty Gisele teamed her two-piece with a floppy sun hat as she kept a close eye on her little boy, who appeared to be thoroughly enjoying himself in the sea and sand.
Gisele spoke previously about how Benjamin lights up her life, revealing: 'My son is so cute! I love hearing the little giggles.
She has yet to comment on reports that she is expecting her second child with husband Tom Brady.
But Gisele Bundchen chose to copy Megan Fox's method of pregnancy confirmation yesterday, as she debuted her baby bump in a bikini on the beach in Costa Rica.
The 31-year-old model was seen sporting a grey triangle bikini which highlighted her blooming figure as she spent some time with her two-year-old son Benjamin.
The 31-year-old stripped down to pose nude on the beach in the new issue of Vogue Paris.
She put her Brazilian curves on show in all their glory in the provocative black and white frame, and also posed topless in the sand wearing just aqua bikini bottoms.
She famously lectured other mothers about the perils of not breastfeeding your child, and accused women who gain too much weight during pregnancy of treating their bodies like garbage disposals.
But Gisele Bundchen apparently isn't so holier-than-thou when it comes to being sun safe.
The supermodel, who was raised in sizzling Brazil, appeared to have been a little sloppy with her sun cream application during a day-long photoshoot on the beach in Malibu this week.
Ouch! Gisele Bundchen displayed a painful-looking sunburn as she spent the day modelling on the beach in Malibu this week
The 31-year-old was sporting a red patchy burn on her chest and stomach as she posed for a jewellery campaign in the sunshine.
Her tiny bikini top exposed the painful-looking raw skin, which appeared to be close to where her long layered necklaces were placed in the previous shot's outfit.
Perhaps the glittering jewels attracted the UV rays to her skin more, resulting in the uneven colouring.
Got to be sun safe: The supermodel spent the day in she sunshine shooting a jewellery campaign in Malibu. . . Read more