Three weeks after getting marriedNe-Yo and wife Crystal Renay Smith have welcomed their baby boy into the world.

“Prince SJ has arrived,” Renay Smith wrote on Snapchat late Tuesday night (March 15), sharing a photo of her little boy's hand.

On Tuesday, Renay Smith shared a sweet photo on Instagram to pay homage to her new family, using the hashtag #tonightisthenight.

"I began this journey with you and here we are at the finish line stronger than ever TOGETHER! I feel so blessed and frightened at the same time but I know that God and you have my back. I can look to you for strength when I feel mine failing and know that in you I'll find me. My family, friends and sincere supporters know how monumental tonight is for me and I thank you all for being there for me and loving me unconditionally through my process. I couldn't have made it through without you."

The baby boy is their first child together. Ne-Yo already has a 5-year-old daughter, Madilyn Grace, and 4-year-old son, Mason Evan, from a previous relationship with Monyetta Shaw.

The couple were married on Feb. 20 in California.