Holt's father grew up with 9 siblings. Thus, she has 40 cousins. Her mother is an English. In 2012, Holt was listed 45th on the Buddy TV’s 100 Sexiest Women list.
Holt's first television role came with the Australian dramatic fantasy television programme H2O: Just Add Water. She appeared in a leading role as Emma Gilbert. She left the show in the third season.
Holt later appeared in numerous television series like Mean Girls 2, Pretty Little Liars, The Vampire Diaries, Aquarius and The Originals. Likewise, she has also appeared in several movies that include Messengers 2: The Scarecrow, Blue Like Jazz, 47 Meters Down, and so on.
Similarly, Holt has also been nominated for several prestigious awards. She has been nominated for Teen Choice Awards for her role in American television series The Originals.
Similarly, Claire Holt has also featured in a The Madden Brothers’ music video, "We Are Done" and Dustin Lynch’s "Small Town Boy".
Talking about her personal life, Holt was in a relationship with her ex-boyfriend Rafi Gavron in February 2009, but they couldn’t continue their relationship and broke up in 2010.
Holt was then involved in a short-lived relationship with Paul Telfer, and Andrew Joblon. Later, she got married to her ex-husband Matthew J. Kaplan on April 28, 2016, but her husband filed for a divorce on April 27, 2017, stating irreconcilable difference.
Holt stands at 5 ft. 6 inches and weighs around 60 kg. She is active on social networking sites like Twitter and Instagram.
Holt owns an apartment in Brisbane, Queensland, Australia. She has maintained a good net worth of $0.5 million at the age of 29.