The pair's baby news may not come as a surprise to their fans as it was reported in August the couple had been trying for a baby for a few months.
A source said at the time: "They've been trying to conceive for a couple of months now, and she told Justin she's going to see a fertility expert.
"She has no problem using technology, if that's what it will take to have a baby and stick this marriage out."
Justin fuelled pregnancy rumours last week when the 33-year-old singer attended the amfAR Gala in Los Angeles without the brunette beauty.
What's more, Jessica's friend Ariel Foxman sparked further speculation his pal is expecting when the InStyle editor posted a Throwback Thursday picture on Instagram last week congratulating the star on her pregnancy.
He tweeted: "Congrats @jessicabiel on your impending motherhood... Looking forward to the red carpet maternity style pic to come #tbt. (sic)"
Oops, wonder if Ariel Foxman meant to spill the beans?
Photo / Instagram
Who's arresting who?
We were all twelvies once... With hideous fashion sense.
Baby farts... even the dogs not impressed.
Bleached brows...
Well she seems happy to see that pillar!
22nd century technology.
Do cats ever look happy?
No such thing as too many accessories.
Mike Check!
- Bang! Showbiz, nzherald.co.nz