Gwen Stefani 'stepping boldly into her faith,' sparking strong reactions from fans: expert

Gwen Stefani faced backlash from some of her fans after she recently spoke out about her Catholic faith and her partnership with the prayer and meditation app Hallow.

The 55-year-old singer first announced her collaboration with Hallow in a video shared on Instagram in December. In the clip, Stefani invited fans to join her on the app for a 25-day prayer challenge to celebrate the season of Advent ahead of the Christmas holiday.

On Ash Wednesday, the "Hollaback Girl" hitmaker launched...