"My son, Winston Elba, was born yesterday. Truly amazing," the 41-year-old TV and film star tweeted Friday.
The Luther and The Wire leading man also has an 11-year-old daughter with his ex-wife, Dormowa Sherma. He and Garth reportedly began dating last year.
My Son Winston Elba was born yesterday..Truly Amazing :-) pic.twitter.com/MrSEQPZo4z— Idris Elba (@idriselba) April 18, 2014
2014: The Year in Music [PHOTOS]