Karissa Shannon

Karissa and Kristina became Playboy Playmates in 2009, with Karissa as Miss July and Kristina as Miss August, sharing a single centerfold in a combined summer issue. They moved into the Playboy Mansion in 2008 as Hugh Hefner's girlfriends and appeared on The Girls Next Door. After breaking up with Hefner in January 2010, they moved to the Playmate House. They were planned to star in a spinoff called The Bunny House, but were asked to leave after Hefner learned they had boyfriends. In 2010, Karissa was involved in sex tapes with Spencer Pratt and Heidi Montag, and a sex tape with Sam Jones III was released as Karissa Shannon Superstar. The twins also appeared on Celebrity Big Brother in the UK in 2012, finishing fifth.

The twins have had extensive plastic surgeries, including a botched augmentation and nose job that left them looking different. They appeared on Botched in 2015 for corrective surgeries and now have 750cc silicone implants. Her physical specs include a 36–26–34 measurement, a 32DD bra cup size, and enhanced breasts. She has tattoos, including a design on her tailbone and "Follower of Christ" script on her left ribs, as well as piercings in her navel and breasts.

Karissa's career includes solo nudity and boy-girl scenes including blowjob, vaginal, and interracial. She has performed in solo scenes with masturbation and dildo, as well as lesbian softcore. In December 2018, she and Kristina signed with Brazzers to film hardcore scenes together, emphasizing that they would be "tastefully done." She is the twin sister of Kristina Shannon. Her achievement includes being Playboy Playmate of the Month for July 2009.