With the glistening ocean as the backdrop, the Danish beauty, 26, posed in nothing but a pair of tiny red bikini bottoms as she topped up her tan.
Joking about the aftermath of the image, Nina captioned the image: 'Currently laying on a heating pad from arching my back.
The cheeky reflection in a mirror shows off the model's flawless figure and has fans drooling over Nina's undeniable beauty.
And by practicing self love and self care.
While she is known for her impeccable figure, the catwalk queen proved she likes to indulge here and there as she chowed down on a piece of mozzarella.