Tamar Braxton Welcomes Baby Boy

"Friends, he's finally here," she Tweeted Thursday evening, posting a photo of a large blue teddy bear and an "it's a boy" balloon.

The singer, 36, and husband Vince Herbert first announced their pregnancy in March, when she was already seven months along. Why the wait?

"Vince and I [were] told we were going to have fertility problems — it was a lot of information — so we had to get comfortable with the fact that it happened on its own," Braxton told PEOPLE at the time.