Christie Brinkley has been forced to defend her latest holiday pictures after fans labelled them "inappropriate".On Monday, the mother-of-three happily posted a series of pictures that showed her looking stunning in a red swimsuit, which she accessorised with a matching sarong, straw hat and flip flops.MORE: Christie Brinkley stuns fans in new beach swimsuit photosIn the four pictures, the former model could be seen watering her colourful plants with the sea behind her, and while Christie, 66,