Christie Brinkley waved goodbye to winter and welcomed spring with the most amazing bikini photo on Friday. The star, 67, sent fans wild with a snapshot from her National Lampoons days and she looked amazing. MORE: Christie Brinkley looks impossibly youthful in new video Christie wore a tiny white two-piece which showcased her model physique. She simply captioned the image shared on Instagram: "Leaving Winter behind and Diving into Spring (and the Week End) with a #flashbackfriday.