Choosing initially to combine modeling with her studies, Clark attended the London School of Economics as a law undergraduate with the intention of pursuing a law career.
However the success of her modeling career led her to leave the program after 18 months and move first to Paris and then a year later to New New York Jessica has worked with such notable clients as Hermes, Redken, and L’Oreal. She has also appeared in magazines such as Vogue, Elle, Marie Claire and Jalouse.
She walks the runway for designers such as Hermes, Bottega Venetta and Matthew Williamson.
While living in New York City Jessica had trained as an actress and in 2011 relocated to Los Angeles where she has had success in television and Independent film. Jessica is signed with Marilyn New York Agency and continues to model, most recently shooting the cover story of Vogue India.
She had a central role in feature film A Perfect Ending, a 2012 lesbian film directed by Nicole Connecticut She plays the fictional vampire goddess Lilith in True Blood.
She appeared on the cover of the October 2012 issue of Vogue India.
In 2015, she had a central role in the satirical thriller Pocket Listing.