Jessie Cave

That August, she made her debut at the Edinburgh Festival Fringe with her show, Bookworm, which is described as "a charming hour of character comedy and loving literary silliness inspired by the obsessive Potter fans" Cave encountered while starring in the Harry Potter films. In the show, Cave stars as the bossy leader of a book club named Bookworms United, whose sidekick is played by her younger sister, Bebe. Cave's character expresses her enthusiasm for topics ranging from Babar to Andre Agassi's autobiography through a combination of homemade props and shadow puppetry, which conceal the character's neurosis, and contrast with a subplot about an ex-boyfriend. Her 2018 Edinburgh Fringe show Sunrise was an "emotionally intelligent [and] honest" performance (including a Harry Potter fan convention-as-sex-party sketch).

Cave published a book of cartoons called Lovesick on 2 July 2015 through Ebury Publishing. These cartoons have also been made into a greeting card range published by Cardmix.

From 2014-2017, Cave was in a relationship with fellow comedian Alfie Brown, son of composer Steve Brown and impressionist Jan Ravens. The couple have a son, Donnie (born October 2014) and a daughter, Margot (born July 2016). The couple's relationship inspired Cave's 2015 Edinburgh Festival Fringe comedy hit I Loved Her and her sell-out show Sunrise (2018) in which she explores their break-up and co-parenting. Sunrise received widespread praise and rave reviews. In 2018, the former couple took part in Comedy Central's Roast Battle.

During 2013, Cave played a minor role as a waitress named Angela in a medieval restaurant in the second series of BBC Three's Pramface, aired on 8 January 2013. She appeared as Theodora Snitch, a character in YouTube's one-off revival of the TV series Knightmare; Denise in episode 2 of Coming Up Series 8; as Alicia Ferguson in the CBBC series Wizards vs Aliens, in the two-part episode "The Thirteenth Floor"; as Anne-Marie Bonner in series 2 of The Job Lot, and as Annie Maddocks in the E4 drama Glue in 2014.

During 2012, she played the title character in a 2012 production of J. M. Barrie's Mary Rose at the DogOrange Theatre, in London, Zazzy in the final episode of season 2 of Grandma's House, aired on 24 May 2012, and the role of Elder Biddy in the 2012 film adaptation of Great Expectations, based on the novel by Charles Dickens, and directed by Mike Newell. During the filming of Great Expectations, Cave worked alongside her younger sister Bebe (who played the younger Biddy), and was also reunited with her Harry Potter co-stars Helena Bonham Carter, Robbie Coltrane, and Ralph Fiennes. By June 2012, Cave had amassed over 30,000 followers on her Twitter account.

On 4 February 2011, she appeared as a one-off character Hermione in the CBBC children's drama Sadie J.

She appeared in the play Breed at Theatre503, playing the role of Liv, from 21 September to 16 October 2010. She won the Off West-End stage award for People's Choice for Female Performance.

In June 2009, she made her West End début, playing "Thomasina" in a revival of Tom Stoppard's Arcadia at the Duke of York's Theatre. That December, Cave had a minor role in the 2009 film Inkheart as a water nymph.

Cave made her acting debut in the drama Summerhill, shown on CBBC in early 2008.

She won the role of Lavender Brown in the film Harry Potter and the Half-Blood Prince through an open casting call held on 1 July 2007. Cave, who came from an agency, beat over 7,000 girls who turned up for the audition. She also performed the voice of Lavender in the video-game adaptations of Harry Potter and the Half-Blood Prince and Harry Potter and the Deathly Hallows: Part 2.

Jessica Alice Cave Lloyd (born 5 May 1987) is an English actress, comedian and cartoonist, known for her role as Lavender Brown in the Harry Potter film series, and for her shows in London and at the Edinburgh Fringe. She has also published a book of her trademark cartoon doodles, called Love Sick, and some of the designs have also appeared on greeting cards.

Cave was born 5 May 1987 in London, the second eldest of five siblings. Her father works as a general practitioner. Her mother, Deborah, is the daughter of former Chief Secretary to Hong Kong, Tasmanian-born Sir Charles Philip Haddon-Cave. Her youngest sister Bebe Cave is also an actress.