Celebrity couple John Legend and Chrissy Teigen have announced that they are expecting their second baby. The news was shared by Teigen on her Instagram account, with their first child Luna breaking the news in the most adorable way.

In the video posted by Teigen, she taps her belly and asks her first child Luna, "What's in there?" Luna responds, saying "Baby!" as she touches her mother's tummy. It seems like the little one will soon be a big sister.

Teigen captioned the video "It's John's!" Legend, on the other hand, tweeted the video with a couple of baby emojis and two hearts.

A source close to the situation has confirmed that the popular couple is pregnant with a boy. "Chrissy and John are so excited to be having another baby, and Luna is too!" said the source. "She loves touching Chrissy's belly and 'talking' to the baby."

In 2015, Teigen opened up about the difficulties they faced trying to get pregnant. "It hasn't been easy," she said. "But we kept trying because we can't wait to bring our first child into the world and grow our family." Teigen had previously had to undergo in vitro fertilization treatments to help with her fertility problems.

Now, the couple is on their way to bringing another child into the world, but how big do they want their family to be? Both Teigen and Legend have been vocal about wanting to have a big family.

According to Teigen, she probably thinks about growing her family more than anybody. "I cannot wait to have the biggest family," she said in an earlier interview.

With baby number two on the way, the couple's parenting skills will be tested. The parents have their own roles when it comes to their first child, Luna. According to Teigen, she the more playful parent whereas John is calmer half of the duo.