Hollywood A-lister Eva, 40, is said to be seven months pregnant with 33-year-old Ryan's child, so it's remarkable they've managed to keep it quiet for so long!
Just five months ago, Eva found herself in the centre of pregnancy rumours after she refused to walk through a body scanner at airport security.
Speaking to Ellen DeGeneres on her chat show, Eva dismissed that she was having a baby and claimed her reasons for opting out of a full body scan was because of the potential radiation aspect associated with them and the fact that they are "really creepy" as they "basically see you naked".
However, last night Ellen tweeted: "Congrats to @RyanGosling and @EvaMendes! That's going to be the most beautiful, bilingual, part-superhero, well-dressed, romantic baby ever!"
The couple have been in a relationship for three years and are notoriously private about their personal lives.
Reveal has contacted Ryan's rep, but they had no comment to make.
Eva and Ryan have actually had some parenting practice together, thanks to their co-starring roles in their 2013 film Place Beyond The Pines. Eva and her beau played a troubled couple who shared a son.
Celebrities who have announced baby news in 2014:
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