Real Housewives of Orange County 's Tammy Knickerbocker daughter, Lindsey Knickerbocker, has been reported missing.
Lindsey's family has posted to social media to ask for anyone with any information to contact them immediately about her whereabouts.
The Knickerbocker family say they last had contact with Lindsey more than a fortnight ago and that they have contacted authorities to issue a missing persons report.
Tammy Knickerbocker has taken to her social platforms to ask if anyone has information about her missing daughter.
She wrote: "Worried about Lindsey, she is missing somewhere in Vegas, Henderson. Any knowledge of her please contact me. Thank you."
Tammy starred as a main cast member on Real Housewives of Orange County in seasons two and three, starting in 2007, and as guest star most recently in series 10 in 2015.
Lindsey's sister Megan Knickerbocker has also posted multiple photographs of Lindsey including the most recent one on Facebook.
Alongside the post, Megan wrote: "Has anyone seen her? Last contact was January 9th and she was scared for her life. No one has heard from her since. Absolutely gone without a trace.... her name is Lindsey and she's 5'5 and 110lbs, brown eyes and blonde hair and 34yrs old."
Tamra Jude, who is a current star of The Real Housewives Of Orange County, posted a photo of Lindsey Knickerbocker on her Instagram page that's captioned: "Missing in Nevada area @tammyknickerbocker.oc'"
Lindsey Knickerbocker was reportedly arrested in Arkansas on February 12 last year for alleged drug possession and forgery, according to Pix 11.
According to court documents, Knickerbocker was booked into the Crittenden County Jail on multiple charges including possession of methamphetamine, cocaine, or heroin (less than 2 grams), possession of a forgery device and forgery in the first degree.
Sources also reported that Lindsey was arrested for DUI in 2013 in an incident where she allegedly rammed several parked cars and punched a police officer.
The Mirror have contacted Tammy for comment.