My mom recently pulled out an old baby picture of me and told me I looked like the Pope, with a beatific expression and a hand raised in blessing. "It was a sign!" says she.
Blessed John XXIII seems the likeliest candidate... you be the judge. :)
I'm two months old in that picture, and boy was I fat. Topped ten pounds at birth and thirty pounds at one year. Look at that double chin! Mom says as a child I often reminded her of the chubby puppy in "101 Dalmations"-- the one who's forever saying, "I'm hungry, Mama, I'm hungry!"