Charlotte McKinney puts on busty display in white tube top and lime green skirt while on tropical getaway

Charlotte McKinney, 29, poses in a very daring pink string bikini as she has fun at the beach while heading into her birthday weekend

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 gets 'absolutely worked' at Tracy Anderson's gym in Studio City