Ryan Gosling and Eva Mendez — Lunch with First Kid … New Baby Still Under Wraps (PHOTOS)

Eva Mendes flashed a “fooled ya” smile on her way out of lunch with Ryan Gosling and Esmeralda — the kid we knew about, but baby Amada was still hidden from sight.

Ryan and Eva went out with the fam in L.A. for Mother’s Day … 24 hours before TMZ broke the story that they’d secretly already had their 2nd child on April 29.

Eva was still carrying her giant handbag, because on Sunday they were still pulling off Operation Fake Stork Delivery. Shortly after the jig was up on Monday afternoon … Ryan walked into Jimmy Kimmel’s studio (where there was NO mention of Amada’s birth).

It will be interesting to see if Eva’s still covering up the next time we see her.