 In 2003 , her father sent test photos to a Los Angeles office of IMG Models . By 2005 she was an up @-@ and @-@ coming model with the Marilyn NY agency . She did a 2005 fall campaign for Stella McCartney . By February 2006 , she had been featured in each of the major editions of Vogue , including the cover of a Vogue Italia supplement . Following cover appearances for the October 2006 German Vogue and the July 2010 Italian Elle ( she also later appeared on the October 2012 cover ) , she became one of the new faces of Guess clothing in late 2010 . Miller has also done work for Victoria 's Secret . Other ad work has included Bebe , Billabong , Chopard , Diesel , Elie Tahari , Intimissimi , Juicy Couture , La Perla and Laura Biagiotti . 
