You folks are right about a masculine noun that starts with a vowel (enfant), has the effect of changing the pronunciation of a preceding masculine adjective (divin) to a feminine pronunciation: "diveen enfant". Same is the case, for example, with 'bon appétit' (say 'bun appétit' and not, as I hear all the time, 'bone appétit') and 'bon anniversaire/happy birthday.

Joyeux noel à tous!

Dunkle