According to Us Weekly, the firstborn for the couple arrived on Friday, September 12, though no more details are available from the incredibly private couple.
Rumors of the pregnancy began in July with several media outlets reporting Mendes, 40, and Gosling, 33, were expecting a baby together.
Earlier this year, she laughed off pregnancy rumors on "The Ellen DeGeneres Show".
"It's so ridiculous," she told Ellen DeGeneres at the time, denying the claim
"This all started because I didn’t want to go through the scanners at the airport – those X-Ray scanners that are really creepy," Mendes told DeGeneres. "They basically see you naked and not to mention there is a radiation aspect to it. So I always pot out. I always ask for a personal pat down."
The couple never publicly confirmed that she was pregnant and no photo was leaked of her sporting a baby bump. Mendes kept a low profile during her pregnancy, making her last red carpet appearance at a Violet Grey dinner honoring the late Elizabeth Taylor in L.A. on Feb. 26.
The baby is the first for Eva Mendes and Ryan Gosling, who first began dating in fall 2011 after costarring in The Place Beyond the Pines. That same year, Gosling told UK newspaper The Times that he would "make movies until I make babies."
