Ne-Yo has named his second child Mason Evan Smith.
The 'Closer' hitmaker's fiancee Monyetta Shaw - with whom he already has an 11-month-old daughter Madilyn Grace - gave birth to the couple's son on Sunday (09.10.11).
Ne-Yo tweeted: "Sal-u twit fam. If you are truly fam you'll help me welcome the heir to my throne, born OCT.9TH at 6 pounds, 10 ounces! Mason Evan Smith! (sic)"
This is not the first time Ne-Yo has used the micro blogging site to announce the birth of his child, when Madilyn Grace was born last year, the singer - real name Shaffer Chimere Smith - tweeted: "She's healthy and happy. Feels like I'm in luv for the first time (sic).
"Welcoming that lil' girl to the world last night defined for me what 'willing to kill and die for' truly means. My world, my life, all hers (sic)."
Ne-Yo also uses twitter to gush about his daughter, writing last month: "Why is my daughter growling!?! Lol!! Where the hell does that come from!?! It's adorable.....but a lil strange!! HA!! (sic)