Complex sentence: In the late 1940s, Blanchard became a successful print model and film extra, and she began appearing in films after she was seen by a producer in an advertisement for bubble bath in 1950.
Split into simpler sentences: In the late 1940s, Blanchard became a successful print model and film extra. Blanchard began appearing in films after she was seen by a producer in an advertisement for bubble bath in 1950.