Lauren also posted on Instagram, showing pics of her and Aaron as kids along with their baby's sonogram. "Oh hi," she wrote alongside the photos.
The couple, who met at Coachella, became engaged in Jan. 2012. Aaron and Lauren tied the knot in May 2013.
Talking about his marriage to Lauren back in 2014, Aaron told Elle, "People get in fights because they don't communicate, because you don't want to hurt the other person. If you do want to hurt the other person, then shame on you—you're an a--hole. My wife and I do not argue. We communicate. We talk. But we've never fought in our entire relationship."
Congratulations to the couple!