Big Brother couple Jessica Graf and Cody Nickson have unveiled the sex of their second child together one week after announcing their pregnancy news.

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The Big Brother and The Amazing Race couple posted a video entitled "Baby #2 Gender Reveal!!!" on their YouTube channel on Tuesday, May 12.

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In the video, Jessica, 29, stood closely next to Cody, 35, in the backyard of their home as he shot off a confetti cannon and pink paint and confetti filled the air, revealing the couple has another baby girl on the way.

"It's a girl!!!" flashed across the screen as Jessica and Cody hugged each other and celebrated.

Although Cody was smiling, he appeared slightly underwhelmed they're not having a son considering he's already a father to two girls -- Maverick, 13 months, whom he welcomed with Jessica and Paisley, 8, from a previous relationship.

Jessica therefore teased Cody and playfully slapped him with the cannon, assuring the camera, "I'm happy!"

Big Brother alum Elena Davies filmed the gender reveal for Jessica and Cody, who fell in love on Season 19 of Big Brother in 2017 and then got engaged on February 13, 2018 shortly after winning the $1 million prize on The Amazing Race's 30th season.

"Cody is good at making girls!" Elena joked from behind the camera.

Jessica admitted in her Instagram Stories on Tuesday that she accidentally spilled her baby's gender with a pronoun when talking to fans on her page and so she and Cody decided to post their gender reveal on YouTube a bit earlier than anticipated.

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"I actually didn't want to announce the gender yet... I wanted to wait until my ultrasound on [Wednesday] that actually confirms the gender," Jessica said on Tuesday.

"We found out the gender via blood test... and what if it was wrong? So I wanted to confirm it before we announced it."

On Mother's Day, Jessica posted a family photo on Instagram and captioned it, "I love them. Plain and simple... Super happy to announce that not only do we know @babynickson gender but we also have a name picked out."

"It's nice to be able to call this squirmy little one by a name."

Jessica is four months into her pregnancy, and the new baby is due in October 2020.

"Since we have to schedule our csection still, we don't have an exact date but hopefully this delivery will be much more smooth!" Jessica wrote on Instagram over the weekend.

"But I'm very excited because October is my favorite time of year and I can also celebrate my 30th with the whole family come December."

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Jessica first announced she's pregnant again on May 6 by posting a sweet family photo.

"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," Jessica wrote last week.

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"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."

"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."

Jessica and Cody announced their first pregnancy together in September 2018.

One month later, in October 2018, Jessica and Cody tied the knot in Malibu, CA, at The Chateau Le Dome at Saddlerock Ranch.

The day after their wedding, the Big Brother and The Amazing Race couple revealed they were expecting a baby girl. Maverick was born on March 17, 2019, nearly a month before her April 11 due date.

Jessica did not debut her first baby bump until December 2018 when she was 22 weeks along with Maverick in order to avoid haters and trolls, but this time around, Jessica doesn't appear to be shy or holding back.

For example, Jessica recently posted a baby-bump photo in a blue dress with white polka dots.

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About The Author: Elizabeth Kwiatkowski
Elizabeth Kwiatkowski is Associate Editor of Reality TV World and has been covering the reality TV genre for more than a decade.