Kate Hudson is letting it all hang out. Quite literally.

The mom-to-be was photographed in a white string bikini while vacationing in Mexico with boyfriend and Muse frontman Matt Bellamy and her son Ryder. The bathing beauty isn't going to let her growing baby bump stop her from having an even tan.

Hudson squashed rumors back in January that she and Bellamy were engaged following the news that the pair were expecting.

Check out the photo after the jump.