Lucy from the The Stanford 3D Scanning Repository. Original model is around 20 million polygons, which is decimated to 20 lakh polygons, and then retopology is done to bring the model to a usable state. The low res mesh is around 180,000 polygons, which is uvw mapped and normals projected from the high resolution mesh to retain the original details. Here you can download the 20 lakh decimated mesh + the low res model with uvw map and textures including normal maps and displacement maps.

Download Lucy - 20 lakh polygons decimated mesh

Download Lucy - Low res UVW mapped model

Download Lucy - Textures

Model usage should abide by these rules

http://graphics.stanford.edu/data/3Dscanrep/#uses