Complex sentence: Helen Rose (February 2,1904-November 9,1985) was an American costume designer, who spent the bulk of her career with Metro-Goldwyn-Mayer, where she clothed the stars of 200 films.
Split into simpler sentences: Helen Rose (February 2,1904-November 9,1985) was an American costume designer. She spent the bulk of her career with Metro-Goldwyn-Mayer, where she clothed the stars of 200 films.