Kendall Jenner's bikini tan lines are visible with her corset top at the signing of her first magazine cover

Forgot the sunblock, Kendall? The famed half sister of the Kardashian ladies, Kendall Jenner was spotted at Raine magazine's signing, on which she is the cover girl, at Barnes and Nobles in Calabasas, wearing a chic outfit indeed, but her visible bikini strap tan lines made it a fashion disaster.

The tall aspiring sixteen year old model who doesn't seem to yet have the famous Kardashian curves, wore a black skirt with a corset inspired black and white top, with black chunky wedges. Her hair was curled to perfection and her fresh face made her look youthful and chic.

See all the pictures here: