This week, her friend and InStyle editor Ariel Foxman posted a Throwback Thursday snap with the actress, which he captioned: "Congrats @jessicabiel on your impending motherhood… Looking forward to the red carpet maternity style pic to come #tbt."
The question of whether Jessica and husband Justin Timberlake are set to become first-time parents was fuelled just recently when Jessica appeared to have a baby bump during a hike with her husband.
And just this week, Justin stepped out without his wife when he attended the amfAR Gala in LA, again prompting speculation about a possible pregnancy.
A source has confirmed to RadarOnline that Jessica is three months pregnant, and is due in April 2015.
"Jessica has had tense times in the past when it comes to having a baby, so it is not surprising that she is staying mum on confirming the news publicly yet," a second source added.
Justin and Jessica celebrated their second wedding anniversary last week, and were spotted going for a hike together in Montecito.