Complex sentence: Kristen Jaymes Stewart (born April 9,1990) is an American actress, known for playing the protagonist Bella Swan in "The Twilight Saga" film series from 2008--12, which has grossed over $3.3 billion worldwide.
Split into simpler sentences: Kristen Jaymes Stewart (born April 9,1990) is an American actress. She received widespread recognition in 2008 when she landed the role of protagonist Bella Swan in "The Twilight Saga" film series (2008-2012), which have grossed over $3.3 billion worldwide.