Christie Brinkley's social media posts are usually full of joy and laughter, as she shares with her fans how she spends her days in the most beautiful of outfits.MORE: Christie Brinkley shares an unexpected peek into her Hamptons homeHowever, her latest upload left quite a few of them feeling more than a little worried for the supermodel as she decided to brave the elements.WATCH: Christie Brinkley shares glimpse into her morning routine at homeChristie took to the beach near her Hamptons home