sought after       
adjective uk/ˈsɔːt ˌɑːf.tər/ us/ˈsɑːt ˌæf.tɚ/
 (因品质高或稀有而)热门的,广受欢迎的
wanted by many people and usually of high quality or rare
  [ before noun ] At the age of 17 she is already one of Hollywood's most sought-after actresses. 她17岁时就是好莱坞最走红的女演员之一了。 
 Synonyms: desirable (WANTED)desired