AceShowbiz -

Gwen Stefani reportedly is pregnant with her third baby with husband Gavin Rossdale. She sparked the pregnancy rumor after she was spotted having a fuller figure, which is then claimed to be a baby bump, after a recent flight from California to New York City.

"She was pulling at her shirt to keep it away from her body. It seemed really strange - but then, when she turned to the side, I could see why," a source told Star Magazine. "She definitely had a baby bump!"

The pregnancy rumor becomes more persistent when the female vocalist of band No Doubt was also spotted wearing a Sea-Band bracelet which is usually used to help relieve morning sickness expectant mother experiences.

"Gwen is having a really rough time this pregnancy," another insider told OK! Magazine. "She had all-day morning sickness for a while with Zuma, but she's sicker this go-round and has been feeling exhausted and dizzy."

Gwen Stefani and Gavin Rossdale got married in 2002. They already have two children; Kingston and Zuma. Most recently, their marriage was hit with affair rumor between Gavin and Courtney Love which was quickly clarified by Gavin who stated that he indeed dated Courtney but that happened at the start of his relationship with Gwen.