In parts of South America, you can barely move for beautiful people chipping their nail polish on endangered hardwoods, and, in Africa, cuddling up to wild animals. Tracy Ward, the actress and now Marchioness of Worcester, started trying to save the tropical rain forest after a stint on a detective TV series. As she tellingly explained, "I had never really had the time or the knowledge, and suddenly when I had no work I realised there was a problem."
I don't really understand what the sentence "you can barely move for beautiful people...." means. Please help me to understand.