Chrissy Teigen, John Legend Expecting Baby No. 2! Watch Pregnancy Announcement [VIDEO]

Chrissy Teigen and John Legend will soon be parents to two kids.

On Tuesday, the model took to Instagram to share an adorable clip of herself with her 1-year-old daughter, Luna. In the video, Teigen asked the toddler, "Luna what's in here?" Then Luna responded, "Baby!" while rubbing her mom's belly.

The soon-to-be mom-of-two did not say much in the caption. "It's John's!" Teigen wrote.

Meanwhile, according to an insider, Legend and the "FABLife" host are expecting a boy. "Chrissy and John are so excited to be having another baby -- and Luna is too!" one source told Entertainment Tonight. "She loves touching Chrissy's belly and 'talking' to the baby. It's perfect that they're sharing the news over Thanksgiving, because they are incredibly grateful to be adding to their family!"

Legend and Teigen have been open about the challenges they have encountered in terms of getting pregnant. In an interview with Cosmopolitan, Legend revealed that they struggled to conceive, so they considered in vitro fertilization (IVF).

"Having a baby is a big challenge for a couple, and going through that together strengthens your bond because if you make it though [having a child], you know you can make it through anything," Legend said.

"I think it's especially difficult when you can't conceive naturally. You want to feel like everything's working properly and want everything to be perfect, but sometimes it's not," the crooner continued. "I wouldn't say we can't conceive naturally, but I would say that it's enough of a challenge where it felt like we needed help. We're lucky that we're living in an age where we can conceive in other ways. [IVF] brought us Luna and hopefully it will bring us a few more awesome kids, too."

Despite the couple's struggle to have babies, Legend and Teigen are enjoying their relationship and marriage. In September, the singer confessed that he tried to break up with the "Lip Sync Battle" host, but Teigen did not allow him so their split only lasted for less than an hour.

"I was really stressed and busy," Legend told The Guardian. "I was just like: 'I'd just be happier single right now,' and she was like: 'No.'"

Teigen explained on Twitter that it was not a typical breakup and that the singer was just being "whiny." In another post, Teigen wrote, "11 years later, baby," with a laughing emoticon.

Are you happy that Legend and Teigen are finally having another baby? Drop a comment below.