My favorite brand of clothing is Donna Karan
Same here, she is such a great American fashion designer for making her brand.
Do you know when she started this designing
Well she graduated in 1966 and went to Parsons School of Design so technically she started designing around then.
It means she has been into this for a long time. No wonder her products are so fascinating 
She really has, since she began working right out of college for Anne Klein.
Did she have any co founder or someone helping her on this
, Karan worked for Anne Klein, eventually becoming head of the Anne Klein design-team, where she remained until 1985, when she launched her Donna Karan label.
Karan began her career as an assistant designer with Anne Klein in the late 1960s, where she was promoted to associate designer in 1971. As Klein's assistant, Karan was a participant in The Battle of Versailles Fashion Show on November 28, 1973. When Klein herself died in 1974, Takihyo Corporation of Japan became the new owner and Karan, together
Helen Yarmak
Elena Davydovna Yarmak (; born 6 July 1949), known professionally as Helen Yarmak, is a Russian fashion designer and creator of the Helen Yarmak fashion house.
Having been born in Kiev she graduated from Kiev State University and then worked at the Cybernetic Research Institute. She started designing and making clothes in the early 90's. House's first models were labelled "Helen" when in a little while "Helen Yarmak" brand appeared and became popular all around the world.
Helen is a member of