Maci Bookout is pregnant with her second child, a source confirms to Us Weekly. Credit: Theo Wargo/Getty Images

Bentley’s going to be a big brother! Teen Mom'Maci Bookout is pregnant with her second child, a source confirms to Us Weekly. The reality star, 23, is already mom to 6-year-old Bentley. 

On Monday, Dec. 29, she tweeted of the news, “did we break the internet?” The tweet was later taken down.

Bookout welcomed her firstborn in 2009 on the first season of MTV’s 16 and Pregnant with ex Ryan Edwards. She then moved on to the spin-off series Teen Mom, which documented her raising Bentley and calling off her engagement to Edwards. (A new season is currently in production.)

The Tennessee native has been dating boyfriend Taylor McKinney for several years. Edwards has remained involved in Bentley’s life and McKinney has also stepped up to the plate to help his girlfriend raise her little boy. Bookout and her tot have remained inseparable, with the proud mom posting a sweet snap of her little one dressed up in a festive outfit on Dec. 13 with the caption, “Tis’ the season!”

Tis' the season! ????????????????

A photo posted by ?? (@macideshanebookout) on Dec 12, 2014 at 2:18pm PST

Their future bundle of joy isn’t the only addition to the family for Bookout and McKinney. For Christmas they got a precious new puppy named Bonnie, which both have posted about on Instagram. 

Puppy love

A photo posted by ™ (@tmon3yyy) on Dec 12, 2014 at 9:14am PST

“Puppy love,” McKinney captioned a shirtless pic holding the pooch.