"Severe pregnancy acid reflux has led to the purchase of my very own sleep recliner," the star wrote on her Instagram.
"Baby Girl and I are saying Bye Bye Big Apple," Simpson wrote on Instagram while visiting New York City
On Sept. 19, Simpson stepped out in NYC wearing a black turtleneck dress, leggings, leather thigh-high boots, sunglasses and a snake print blazer.
Simpson announced her third pregnancy on Sept. 18 via social media. In this Instagram snap, she dons a long-sleeve printed dress as she cradles her bump.
Later that same day, Simpson was spotted at the airport in her announcement dress as she caught a flight to NYC.
"I always love coming to meetings in NY because I get to put together looks and play dress-up (and my husband gets to show off his Polaroid skills)," Simpson captioned this chic look on Instagram on Aug. 1.
Simpson rocked a cute wedge heel for business meetings on Aug. 2. "Off to shoe meetings today! Any style requests??" Simpson asked her Instagram followers.
That same day, Simpson changed into her best denim jeans for a night out in New York City.
Simpson was spotted out in Soho on July 31 wearing a leopard print dress with a red Chanel purse.
In mid-July 2018, Simpson wore leather leggings and a long-sleeve shirt to the Beautycon Festival in Los Angeles.
Simpson's BFF CaCee Cobb tweeted this photo of the duo at her baby shower in June 2013. Simpson was pregnant with son Ace at the time, she gave birth just weeks later.
Simpson stepped out for some shopping at Fred Segal in 2013 in workout attire.
Simpson donned this colorful, flowing dress in June 2013 while out in Santa Monica.
Simpson made an appearance at an event for her company in March 2013 in this red dress.