The actress stops by Wednesday's "The Ellen DeGeneres Show," where she opens up about her two-month old baby girl with Ryan Gosling, Esmeralda.
While we have yet to see a picture of the surely beautiful baby, Ellen does throw together a photo composite of what their daughter might look like!
Check out the sneak peek above to see the pic and find out how Ryan and Eva are adjusting to parenthood!
Like all new parents, it sounds like Mendes and Gosling are feeling the ebbs and flows of raising a newborn ... like a lack of sleep.
"She's two months! You know we're getting the hang of it, the sleeping thing, but yeah I'm exhausted and it's the best," the "Hitch" star tells Ellen in the clip.
"Really, I'm so incredibly tired. I thought I was tired before at times, but no. Nothing like this, but I wouldn't have it any other way," she adds.
DeGeneres also asks the brunette beauty about her secret pregnancy and how the cute couple were able to keep their baby news under wraps for so long.
"I think just early on, we decided it's going to be very hard for her to have privacy. And we thought this is the first opportunity we can give her to protect her and so then I had a nice calm pregnancy, which I did," she explains.
It definitely sounds like Mendes has a great outlook on motherhood -- what do you think about the "Place Beyond The Pines" star's candid comments? Sound off below and check out the gallery to see more celeb post-baby bods!
Plus, make sure to check out the video above to see what the 40-year-old has to say about losing her baby weight!