Douglas Rossdale, Gavin's father, told the London US Weekly office, "We are delighted." Stefani's mother, Patti, also confirmed the pregnancy to the magazine's Los Angeles office. The artists' publicists have yet to personally confirm the report.
The charismatic singer for pop-ska superstars No Doubt, Stefani broke out as a solo artist last year with the release of her debut, Love, Angel, Music, Baby. The album went on to sell big, and was recently nominated for five Grammys -- including Album of the Year and Record of the Year, for the single "Hollaback Girl."
Stefani and Rossdale were wed in 2002. Their baby is reportedly due in June.