stars not only encourage you to watch a film but they persuade you to buy the perfume and makeup etc.. for example Ewan McGregor sells Davidoff perfume for men.
also stars used to sell cigerettes in the 1930's

they influence the way we live by us wanting to dress or have a style like a star. for example the Rachel haircut or Rihanna red hair

examples of stars that sell products through tv advertising are

Kate Moss-perfume, Rimmel make up
Cheryl Cole- Loreal hair products and makeup
Eva Longoria -Loreal hair spray
Penelope Cruz- hair products
Uma Thurman - Alfa Romeo
Orlando Bloom - Hugo Boss
Reece Witherspoon- Avon
Vanessa Hudgens-Neutrogena face wash
Kiera Knightley- perfume for Chanel
Nicole Kidman - Chanel