I used to think my baby smiled because he was happy. This was last year. Isaiah, once he hit 2 months, smiled like he was trying to catch flies—mouth open wide, eyes crinkled, tongue hanging out ...

Others wrote how the smile of the baby left them happy too. “What an adorable little face!!! That smile,” wrote an Instagram user. “This is hilarious!

The cookbook author, 37, captured her baby boy's first smile in an Instagram clip Chrissy Teigen/Instagram, Getty Chrissy Teigen’s son Wren is one happy baby! The Cravings cookbook author, 37 ...

Tom Pelphrey and Kaley Cuoco appear to have one happy baby girl. On Sunday, the Ozark star, 41, posted a photo on his Instagram Story featuring Matilda, 4 months, with a huge open-mouth smile.