Devon is a native of San Antonio, Texas, and a graduate of the University of Texas at San Antonio. She began her broadcast journalism career as the weekend anchor at KTSA-AM radio in San Antonio. She subsequently was an anchor for KMID-TV (ABC) in Midland, Texas, and KLST (CBS) in San Angelo, Texas. In 1997, Devon joined the ABC's Memphis, Tennessee affiliate WPTY-TV as a reporter. The following year, she was promoted to anchor of the station's three news broadcasts. In 1998, Devon and her news team were awarded a "Best Live Broadcast" Emmy Award.^{[citation needed]}

In 2004 she appeared in the Star Trek: Enterprise episode “The Augments” as the N.D. Engineer. She was the co-anchor, with Mark McGrath, of the television show Extra,^[1] until 2008. She joined Extra in 1999 as the weekend anchor, then became the weekday anchor in 2003. In January 2009, Devon became an on-air presenter on HSN, representing the Sensa Weight-Loss System. In the fall of 2009, Devon moved to ShopNBC, regularly presenting Sensa systems in "Our Top Value" presentations. As of January 2013 Devon is a cast member of the new TLC reality show Plastic Wives. She currently is a reporter for KTLA in Los Angeles.^[2] As such, she hosts the station's 7:00 PM local content segment with a lifestyle program called "LA Unscripted."

• Dayna Devon at IMDb