Clay rose to fame by appearing in Newport Harbour: The Real Orange County, the spin-off of popular MTV show Laguna Beach for two seasons in 2007 and 2008.
The show also spawned the hit spin-off, The Hills.
Thoughts are with his friends and family.
If you or someone you know needs help, phone Lifeline on 13 11 14 or the 24-hour Suicide Call Back Service 1300 659 467.
This article originally appeared on WHO.