Los Angeles: Singer-turned-designer Jessica Simpson is reportedly expecting her third child with husband Eric Johnson.

According to In Touch publication, the telltale signs were all there to confirm her third pregnancy, and Simpson refusing to drink alcohol is said to be one of the signs, reports aceshowbiz.com.

A source said that Simpson and Johnson were seen together at a New York City restaurant late last month, but her husband was the only one spotted drinking. 

But "the biggest sign of all" is a baby bump she allegedly sported while flying back to Los Angeles in a figure-hugging dress. 

The publication also said that people close to Simpson are already "buzzing" about the baby. 

"She really has that glow. She and Eric have been actively trying to have a baby since July, so everyone is convinced she's pregnant," the source added. 

Simpson and Johnson are already parents to 4-year-old Maxwell and 3-year-old Ace Knute.