Gwen Stefani "feels like a giant house" after giving birth to her second son.

The No Doubt singer - who welcomed Zuma Nesta Rock into the world in August - is reportedly finding it more difficult to lose her post-pregnancy pounds than she did after her first son Kingston.

A source close to the star said: "Gwen feels like a giant house at the moment. She found this pregnancy hard and the weight just piled on. She hoped to shed 40 to 50lbs within three months and even lined up a personal trainer.

"But she is still suffering from sleepless nights and caring for Kingston as well as Zuma is really draining, so she has little energy left for high intensity workouts."

Gwen, 38, is also reportedly struggling to control her cravings. The source added: "Gwen's appetite is running wild. She can't resist fries and sandwiches and has cravings for red meat. She is learning that at her age, losing weight is not nearly as easy as it used to be."