Was in a relationship with actress and former Gossip Girl (2007) co-star Jessica Szohr from December of 2008 until April of 2010. He was also in a relationship with actress and model Jessica Serfaty from May 2017 until the fall of 2018.
Was the face of the 2011/2012 campaign for the Philippine clothing brand Penshoppe.
The youngest of three brothers, Westwick is the son of Carole, an educational psychologist, and Peter, a lecturer in business studies.
On January 29, 2024. Westwicks announces his engagement to British actress Amy Jackson. After two years of dating.