Born and raised in Brisbane, Australia. Daughter of a British father. Clemens began working as an actress on Australian television while in high school. She guest-starred in a 2006 episode of Blue Water High as Juliet, and in 2007, she starred in the childrens series Pirate Islands: The Lost Treasure of Fiji as Alison. Clemens played Harper in the Showtime drama Love My Way that year, and was nominated for the Graham Kennedy Award for Most Outstanding New Talent at the 2008 Logie Awards for the role. Clemens was seen in the 2008 MTV Networks Australia dramatic film, Dream Life, alongside Sigrid Thornton, Xavier Samuel, Linda Cropper and Andrew McFarlane.She had small roles in the television series All Saints, and the film X-Men Origins: Wolverine, in 2009. She became the face of Jan Logans jewelery that year.Clemens relocated to Los Angeles, California in 2009. Clemens starred in the 2010 film, Wasted on the Young, as Xandrie. In 2012, Clemens starred in Camilla Dickinson, alongside Gregg Sulkin, Cary Elwes and Samantha Mathis. The drama was an adaptation of the 1951 novel of the same name by young-adult fiction author Madeleine LEngle.