Jessica Simpson Posts Adorable Throwback Photo on Instagram

11/26/2016 03:45 pm EST

Jessica Simpson shared a throwback picture of her and her husband Eric Johnson of the two in a hospital before Simpson gave birth to their son, Ace. "Ace being held by his Dad #aceknute," the singer captioned the 2013 photo. The two have two kids together, including 4-year-old Maxwell Drew.

Simpson has been keeping busy lately with the launch of her children's collections with Babies "R" Us.

"Maxwell will be 4 May 1 and she might be wiser than me," Simpson said in an interview with PEOPLE.

"She definitely has model poses. I was never born to be a model, but my daughter, she's just got something in her that makes people want to strike a pose."

Disclosure: PopCulture. is owned by Paramount. Sign up for Paramount+ by clicking here.