can't tell if boy or girl

It This Baby a Boy or a Girl?
It This Baby a Boy or a Girl?
It This Baby a Boy or a Girl?
Recently, my family went out to eat at a restaurant on Blue Lakes and the server called my son a girl. I didn't care, but my husband did and corrected her. What would you have done? My son (that cutie above), who's only a bit over three months old was dressed in a cute little outfit...