Miranda Kerr is known for strutting her stuff on the catwalk, but she has another skill up her sleeve. The model posted a photo on Instagram of herself doing a back bend at the beach in nothing but a bikini.

The photo shows off her very lean figure - a silhouette of her ribs is visible. She captioned the pic, "Open your heart."

Kerr, who is married to actor Orlando Bloom, also poses with her legs crossed in a leopard-print bikini and topless wearing only black bikini bottoms. The images are a sneak peek from a photo shoot for her Kora Organics skincare line.

Last month, the model inadvertently went topless when her top fell down and exposed her bare breasts during a Miami shoot for the skincare line. A gust of wind took down her top, and she didn't notice until an assistant rushed in to help cover her back up.

Check out more photos of Miranda...