The Irish singer, best known for her 1990 hit version of the song 'Nothing Compares 2 U
Since becoming engaged to Joshua Kushner, the supermodel has converted to Judaism.
The former Catholic notoriously joined the Church of Scientology.
Holmes converted to Scientology when she married Tom Cruise, but following their divorce she returned to the Catholic Church.
Raised by a Quaker and a Roman Catholic, the actress converted to Judaism as an adult.
The son of the first ordained female African-American Unitarian Universalist minister, he became a Muslim in the late '90s.
The famous singer was raised Roman Catholic before getting deeply involved in Kabbalah, a form of Jewish mysticism.
Though she was raised Catholic, Roberts eventually converted to Hinduism.
Monroe’s mother was a Christian Scientist, but Monroe converted to Judaism when she married Arthur Miller.
Raised Catholic, Gere later became a Buddhist.