The 35-year-old talent manager's wife Yael Cohen Braun gave birth to the couple's baby son Levi on Tuesday night (29Nov16).
Scooter announced the happy news by posting a photo of his wife and child on Instagram and added the caption: "Earlier this month we lost my Ma. Then 4 hours later my brother and his wife had twins. Then last night my incredible @yael gave birth to our new son Levi Magnus Braun.
"Words can't express the range of emotions... but one thing I know for sure... G-d is Great."
"Mommy, Jagger, and myself couldn't be more in love with our new little guy," he continued. "I have to believe that somewhere up above Ma is smiling. So damn thankful..."
Yael posted the same hospital photo to her own Instagram page, and wrote: "Last night we finally got to meet our sweet Levi Magnus Braun. Now I have three loves of my life."
The couple went public with the baby news on Father's Day back in June (16).
Scooter, who also represents Carly Rae Jepsen, Tori Kelly, and Ariana Grande, and Yael, the founder of the F**k Cancer charity, are also parents to son JJ, who turns two in February (17). Just days ago, the then-mum-to-be posted a family photo of herself, Scooter and little JJ running around the garden and captioned it: "So grateful for so much. #HappyThanksgiving."
The Brauns wed on 6 July, 2014 in Whistler, British Columbia.