Aviator who designed a line of antiwrinkle women's wear (7)
I believe the answer is:
earhart
(Other definitions for earhart that I've seen before include "Amelia ....... was American flying pioneer" , "Flying ace" , "Amelia ......, American pioneer aviator" , "Amelia ....... was pioneering American aviator" , "Amelia --, first woman to fly the Atlantic" .)