Article continues below advertisementHeidi Klum's sultry vacation streak continues.The Project Runway host, 52, popped out of a tiny blue bikini top while laying on the sand on Thursday, July 17.Article continues below advertisementSource: @heidiklum/InstagramHeidi Klum is 16 years older than Tom Kaulitz.Klum bared her cleavage in a periwinkle top and thong, paired with a crochet hat that covered her eyes. Her hair was damp, as if she had just stepped out of the ocean pictured behind her. The supermodel lounged on a blue beach towel beside her husband, Tom Kaulitz, 35.