Charlotte McKinney flashes underboob as she seems to have a difficult time keeping her bikini in place during beach day… ahead of 30th birthday

Charlotte McKinney flashes underboob as she seems to have a difficult time keeping her bikini in place during beach day… ahead of 30th birthday

Charlotte McKinney flashes underboob as she seems to have a difficult time keeping her bikini in place during beach day… ahead of 30th birthday Pinup swimsuit model Charlotte McKinney seems to be enjoying her summer by the seashore nicely. On Friday the 29-year-old former Guess model shared several photos to Instagram where she was working on her tan…