Hinze, 37, sizzled in a black bikini.
But it proved to be a smidge too small when she was on mom duty.
While doting on one of her kids, Hinze suffered a nip slip.
Meanwhile, Bloom seemed eager to step in on the fun — especially after breaking up with singer Katy Perry.
Since their split, the 40-year-old has been partying all over the globe.
Last weekend, Bloom was spotted leaving a party celebrating California's recent decision to permit marijuana with 30-year-old Brazilian actress and model, Thaila Ayala.
To make matters more interesting, there's a chance the Brazilian beauty may know Perry after it was revealed she follows the singer on Instagram.
Later, Bloom joined other friends (and more models) on a boating trip. We pay for juicy info! Do you have a story for RadarOnline.com? Email us at email@example.com, or call us at 800-344-9598 any time, day or night.