Kelly Clarkson and her music manager/husband Brandon Blackstock are expecting a baby boy! The 33-year-old "Invincible" singer took to social media Friday to reveal the gender of her second child, posting a photo of her 16-month-old daughter River Rose with the caption: "In other news, River's gonna have a little baby brother :) #itsaboy We're so excited!"

Clarkson announced she was expecting another baby to nearly 20,000 fans during a performance at Los Angles' Staples Center in August. The "American Idol" winner broke down in tears while singing "Piece by Piece," a song about her broken relationship with her father, and eventually let her fans know the good news.

"I was not planning on announcing this, but... I'm totally pregnant. I'm having a really hard time," she said during the concert. "This is not how I wanted to announce [the pregnancy]. I didn't want you to think I'm on pills or something weird."

"I would like to apologize to my husband. This was not planned. I'm just so hormonal. Everything is great. I haven't vomited yet. That's a win y'all. I'm so nervous to talk to my husband. We haven't even told our [extended] family!" she added.

Clarkson and Blackstock wed in October 2013 at Blackberry Farms in Walland, Tenn. The singer is a stepmother to Blackstock's two children, son Seth and daughter Savannah, from his previous marriage.

 In other news, River's gonna have a little baby brother :) #itsaboy We're so excited!

A photo posted by Kelly Clarkson (@kellyclarkson) on Oct 23, 2015 at 8:59am PDT