Krista Allen is an American actress and model. She is best known for her roles as Billie Reed on Days of our Lives from 1996–1999, as Jenna Avid on Baywatch Hawaii from 2000–2001, and as Bridget on What About Brian from 2006–2007. Her notable film roles include Liar Liar, Anger Management and Confessions of a Dangerous Mind.

Allen was born in Ventura, California, the daughter of Portuguese American Katherine Mary (née Raposa) and Irish American Dalton Earl Allen, Sr., who later divorced. Allen has an older brother, Dalton Earl Allen, Jr. She grew up in Houston and later lived in Austin, Texas, going to school at Austin Community College and majoring in education. Krista eventually graduated from the University of Texas with an education degree. She considered teaching as a profession but ultimately decided to move back to California and pursue an acting career.

Allen appeared on the television shows Days of our Lives (as Billie Reed, 1996-1999), Married with Children "Calendar Girl" (1996) and Baywatch Hawaii (Jenna Avid, 2000-2001). Allen has also appeared in Confessions of a Dangerous Mind, Anger Management, and the Project Greenlight horror film Feast. Allen is also well known for playing a sexy virtual reality character Maitreya/Jade Blue Afterglow in an episode of The X-Files, and is remembered for her brief appearance as the "Elevator Girl" in the Jim Carrey comedy Liar Liar.

In 2002, she appeared in an episode of Friends, The One Where Joey Dates Rachel as Joey's girlfriend Mable. In 2005, she appeared in the short-lived FOX sitcom Head Cases. In both Smallville and Mutant X, Allen played a woman who could control men with her sex pheromones. In 2001, Krista guest starred in supernatural TV series Charmed as "The Oracle" for three episodes, She also appeared in Toby Keith's video "A Little Too Late", and had a small role in CSI as Kristy Hopkins, a hooker who caught the eye of Nick Stokes, in the pilot episode on October 6, 2000. She returned later in the first season as a murder victim.

In 2005, she was one of the stars of HBO's Unscripted, playing herself as an actress who struggles to overcome her sex symbol status in order to win more serious roles. Allen is featured in Maxim magazine's Girls of Maxim gallery and was Named #70 on the Maxim "Hot 100 of 2005" list.

Allen had a recurring role on the Abcseries What About Brian as Bridget, a reluctant but potential love interest for the main character Brian, played by Barry Watson In 2007, Allen appeared in the Abcreality television series Fast Cars and Superstars: The Gillette Young Guns Celebrity Race, featuring a dozen celebrities in a stock car racing competition. In the first round, she matched up against skateboarder Tony Hawkand rodeo champion Ty Murray.

Allen is sometimes credited as Krista Allen-Moritt as a result of her marriage to Justin Moritt, which lasted from 1996 to 1999; they have one son, Jacob Nolan Moritt, born on July 12, 1997. Allen also dated actor George Clooneyfrom 2002 until 2004.