Article continues below advertisementIs it really summertime if Amelia Gray Hamlin isn't naked on the beach in an oversized baseball hat?!Hamlin shared candid bits of her beach vacation in a new Instagram post, featuring plenty of explicit images of the free-spirited model.The 24-year-old's sculpted physique looked enviable as she posed topless on a cliff. The model displayed her creative humor by cheekily placing seashells on her cleavage to cover her nipples.