Jessica Graf & Cody Nickson Expecting Baby #2, After Welcoming Daughter Last Year

The couple, who shot to fame on “Big Brother” and later won "The Amazing Race” together, shared the happy news on Instagram.

In the photo, Jessica cradles her baby bump and holds up a “Baby #2 Coming Through” sign, as Cody holds their 13-month-old daughter Maverick.

Graf wrote, “FINALLY! As you guys know, Cody and I have been wanting to have all our kids pretty close in age so we were determined to get pregnant this year. A part of me wanted to straight Kylie Jenner it and tell you guys after the birth, but after several accidental IG stories with our ultrasound peaking through in the background, we knew it was time to come clean.”

She continued, “Maverick is going to be a big sister! I'm not really sure if she fully understands that yet but no matter what, she's always going to be my baby.”

The couple tells People the little one is due in the fall!

Jessica and Cody also opened up about their pregnancy news on Graf's “Now What?!” podcast.

It turns out the couple was trying to get pregnant, but that “it was so unexpected ... we had been trying for months.”

Jessica had gone to the doctor for a separate medical issue and the doctor asked her to take a pregnancy test before prescribing her medication. The test came back positive!

She recalled, "I lost it. I was bawling my eyes out in the car and FaceTimed Cody.”

So far the couple does not know the sex of the baby, but will post a gender reveal on YouTube down the road.

Graf said on the podcast, "As far as I'm concerned, Maverick was the easiest baby and I thoroughly loved having a little girl. I'm scared of girls as teenagers, but I'm scared of boys as babies."

Jessica and Cody tied the knot in October 2018, and welcomed Maverick via emergency C-section in March 2019.