Gwen Stefani and her husband Gavin Rossdale are going to be parents for a second time, People magazine reports.
"They [Stefani and Rossdale] and the whole family are delighted," Douglas Rossdale, Stefani's father-in-law, told People.
Stefani is 13 weeks along, according to The Sun.
The couple's first son, Kingston James McGregor Rossdale, will be 2 years old on May 26.
Douglas Rossdale described his grandson is "a great lad ... and we are very much looking forward to another grandchild."
Pop star/fashion designer Stefani, 38, married her rocker husband Rossdale, 40, in 2002.