Prior to joining the Black Eyed Peas, Fergie was addicted to drugs including ecstasy and crystal meth.
Discussing her journey with Oprah during an episode of "Oprah's Next Chapter" Sunday, the "Clumsy" and "London Bridges" singer said she overcame the struggle after walking into a church and having a discussion with God. That discussion included fears of the FBI and police coming after her.
Watch below:
